Rest vs CBT-i Coach: Which free CBT-I App Is Right For You?

If you're comparing Rest and CBT-i Coach, you're probably looking for a free way into CBT-I (Cognitive Behavioral Therapy for Insomnia) that doesn't need a prescription. Both apps are free to start, both are built around the same first-line approach for chronic insomnia [1], and neither asks you to wait on a doctor to open the door. The real split is what each one is for: CBT-i Coach is a free government companion toolkit designed to sit alongside therapy with a clinician, while Rest is a full program you can run on your own — and still share with a clinician if you have one — with an optional paid tier which brings in an AI coach when you want more accountability.

Here's the short version.

• Pick CBT-i Coach if you're on Android, or you specifically want a no-cost government tool with more than a decade of public history and no paid tier at all. It's free to anyone, not just veterans, and it was built by the U.S. Department of Veterans Affairs (VA) with Stanford and the Department of Defense (DoD) [2].

• Pick Rest if you want a standalone program you can start today on iPhone, including a free tier that covers the full self-guided path, Spanish as well as English, and the option to share your sleep data with your clinician from inside the app. The paid plan adds an AI coach you can consult at any time, by text or voice.

Full disclosure: we build Rest, so weigh that. We've tried to give CBT-i Coach a fair read below. Its government pedigree and free access on both platforms are real strengths.

Rest vs CBT-i Coach, Compared

(Pricing, listing, and program details accessed August 2026 and may change.)

How They Actually Differ

• Companion toolkit versus standalone program. This is the main difference, and CBT-i Coach says it plainly: the app is meant to augment face-to-face CBT-I with a healthcare professional, not replace it [2]. Reviewers who like it often describe exactly that use: a free, ad-free diary and education layer between sessions with a clinician [5]. Rest is built as a program you can run without a clinician in the loop. If you do have one, you can still share your sleep data and progress with them from inside the app. That is a different job, not a lesser one.

• What "free" actually buys you. Both give you a sleep diary, education, relaxation tools, and a way to calculate a time-in-bed window from your own logs [2][3]. Rest's free tier goes further as a self-contained path: the full education library, the sleep-restriction schedule and the algorithm that personalizes it, the relaxation audio, and the nightly sleep log, with no expiry, in English or Spanish. The paid plan is there when you want more: a daily AI coach for accountability, with a 30-day money-back guarantee if it isn't for you. CBT-i Coach stays free end to end if you'd rather not have a paid option at all.

• Daily coaching (paid on Rest). Rest's paid tier adds a voice and text AI coach trained on the behavioral principles behind CBT-I plus circadian biology and neuroscience, written with the program's lead scientific advisor, Dr. Ashley Mason, PhD, of UCSF. It reads last night's log each morning, adjusts your sleep window as your sleep efficiency climbs, and can suspend rules that don't fit when you're traveling, ill, or on a temporary schedule, then pick up where you left off. CBT-i Coach has no conversational coach. Accountability is meant to come from the clinician you're working with, plus the diary, reminders, and tools in the app [2]. Used alone, some reviewers say the toolkit feels too generic and leaves them without a clear roadmap [5].

• Reliability and gates. On CBT-i Coach, some reviewers report data problems after updates and recommendations that stay locked while sleep efficiency is still low, which is exactly where most people with insomnia start [5]. Rest does not treat a low sleep-efficiency score as a reason to lock you out. That score is why people open the app, and the program keeps giving a next step while sleep consolidates. No app is immune to bugs, but the contrast reviewers keep hitting is dead ends versus a path that keeps moving.

• Track record and updates. CBT-i Coach has the longer public history: first released in 2013, built from the VA CBT-I manual with Stanford and DoD collaborators [2][3]. Lifetime App Store ratings remain strong [4]. Cadence has thinned, though: its recent US App Store history shows only a couple of releases in the last few months, both described as bug fixes [4]. Rest is newer as a consumer product and ships App Store updates regularly (version 3.197 as of July 2026).

• Platform and language. CBT-i Coach runs on iOS and Android [2]. Rest is iPhone-only for now, so if you're on Android, CBT-i Coach is the one that opens on your phone. Rest runs in English and Spanish; CBT-i Coach's App Store listing lists English only [4].

• Evidence. Neither app has published a large consumer randomized trial of the product. CBT-i Coach rests on the evidence behind the VA CBT-I protocol it supports, plus clinician-perception research on the app [3]. Rest has not published trial data yet. Its internal results track with what's reported for traditional CBT-I, but that is Rest's own data rather than a published, peer-reviewed finding.

So Which One Should You Pick?

For most people who want a program they can start alone today on iPhone, Rest is the stronger pick. The free tier already covers the self-guided path, including the personalized sleep-restriction schedule, you can share progress with a clinician if you have one, and the paid plan adds a daily AI coach for the accountability a lot of people need to finish. Recent reviews of CBT-i Coach also make reliability and lockouts hard to ignore if you're depending on the app as your only guide [5]. Finishing is what rebuilds your sleep, and something that keeps adapting is what most people actually finish.

CBT-i Coach still makes sense in clear cases: you're on Android, or you specifically want a no-cost government tool with more than a decade of public history and no subscription option. Those are real reasons, not footnotes. If none of them apply and you're on iPhone, you can start with Rest's free tier before you pay for anything.

For a wider view of the options, including Insomnia Coach and the rest of the field, see The Best CBT-I Apps (2026). If you're weighing other consumer matchups, see Rest vs Stellar Sleep, Rest vs Sleep Reset, and Rest vs Sleepio. For free options specifically, see Are There Any Free CBT-I Apps?.

Frequently Asked Questions

Is CBT-i Coach free for non-veterans?
Yes. CBT-i Coach is free and publicly available to anyone, not only veterans [2]. It was built for people in CBT-I with a provider, and the VA still points people going it alone toward Insomnia Coach instead [2].

Does Rest's free tier include sleep restriction?
Yes. Rest's free tier includes the sleep-restriction schedule and the algorithm that personalizes it, plus the education library, relaxation audio, and nightly sleep log, with no expiry. The AI coach and daily check-ins are on the paid plan. CBT-i Coach also calculates an automated sleep prescription from your diary as part of its free toolkit [3].

Can I share Rest data with my clinician?
Yes. Rest lets you share your sleep data and progress with your clinician from inside the app, so they can see how you're doing between visits. CBT-i Coach is also built to sit alongside a provider [2].

See how Rest works and start today »

(Rest is a program built on the principles of CBT-I. It does not diagnose or treat insomnia and is not a substitute for medical care. Features and pricing for other products are current as of August 2026 and may change.)

Citations

1. Edinger, J. D., Arnedt, J. T., Bertisch, S. M., et al. (2021). Behavioral and psychological treatments for chronic insomnia disorder in adults: An American Academy of Sleep Medicine clinical practice guideline. Journal of Clinical Sleep Medicine, 17(2), 255-262. https://doi.org/10.5664/jcsm.8986

2. U.S. Department of Veterans Affairs, National Center for PTSD. CBT-i Coach mobile app overview (companion to clinician-delivered CBT-I; not meant for self-care; Insomnia Coach recommended for self-guided use; free and publicly available; iOS and Android; developed with Stanford University Medical Center and DoD partners). ptsd.va.gov/appvid/mobile/cbticoach_app_public.asp; mobile.va.gov/app/cbt-i-coach (accessed August 2026).

3. Kuhn, E., Weiss, B. J., Taylor, K. L., et al. (2016). CBT-I Coach: A description and clinician perceptions of a mobile app for cognitive behavioral therapy for insomnia. Journal of Clinical Sleep Medicine, 12(4), 597-606. https://doi.org/10.5664/jcsm.5700 (describes diary, automated sleep-prescription calculation, education including sleep regulators/circadian process, relaxation tools; iOS users can email diary data to share with a clinician; iOS release May 2013, Android September 2013).

4. Apple App Store listing: CBT-i Coach (id 655918660), US storefront. Language support listed as English; about 12,000 ratings at 4.6 stars lifetime; recent version notes describe bug fixes and performance improvements (v3.2.1 May 2026; v3.2.4 June 2026). Rest: Fix Your Sleep For Good (id 1609977097), latest listed version 3.197.0 (July 2026). Accessed August 2026.

5. Apple App Store customer reviews for CBT-i Coach, US storefront, published August 2025 to July 2026 (61 reviews in the 12-month window; accessed August 2026). Themes include free/VA value and diary usefulness as a therapy adjunct, alongside reports of reliability problems after updates and recommendations gated on sleep efficiency. Customer reviews are self-reported individual accounts, not verified reports, and they skew toward strong experiences in either direction.