Behavioral Experiment vs Thoughtline
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Behavioral Experiment
This app helps users test anxious predictions against reality by guiding them through behavioral experiments. It breaks down goals into manageable steps and offers educational articles on anxiety management. Ideal for individuals working on worry or avoidance, with or without a therapist.
- Guided behavioral experiments
- Anxiety prediction testing
- Step-ladder goal setting
- Educational articles on anxiety
- Session summary export
- Optional reminders
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Anxious thoughts make confident predictions. I will freeze. They will notice. I won’t cope. Behavioral Experiment gives you a way to check a prediction like that against what really happens, instead of taking the thought’s word for it. It’s for anyone working on anxiety, worry, or avoidance, on your own or with a therapist. Behavioral experiments are one of the core methods of cognitive behavioral therapy, and the app guides you through one in four steps. You start by writing the worry as a belief and rating how true it feels. Then you plan a test. You pick a situation that would put the belief to the test, say what you expect to happen in terms you could see or count, and decide which safety behaviors to leave out, the small precautions that feel helpful but keep you from finding out. A plan can have a date and time, or it can wait until the situation comes up. While it’s happening, one screen holds your plan, your prediction, and the safety behaviors you’re leaving out, with room for a few notes that carry into the review. Afterward you record what happened, see it next to what you predicted, and rate the belief again. If you write down a next step, Plan this turns it into the next experiment. When something feels too big to attempt, build a step ladder. Break the goal into rungs rated for expected distress, plan any rung as its own experiment, and move up when a rung feels solid enough. Nine short articles with references explain the ideas behind the method, from how anxiety works and the cycle of avoidance to safety behaviors, predictions, and ladders. Each step has plain guidance and a finished example you can open and read. If you see a therapist, flag experiments to talk about and share a session summary as a PDF, or copy any belief or experiment as text. Reminders are optional and say only that it’s time, or that it’s coming up and when, unless you choose to show your plan in them. On iOS 18 and later, add Record an experiment to Control Center to write down something that just happened while it’s fresh. Free, with no account or ads. What you write stays on your device unless you turn on iCloud sync to see it on your other devices. You can lock the app with Face ID, Touch ID, or your passcode, and delete everything whenever you like. In English and Spanish, with ratings from 0 to 100 or 0 to 10. Behavioral Experiment is a guided worksheet with educational articles. It is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. It is not therapy or medical care, it is not for emergencies, and using it does not create a professional relationship with us. For medical advice, diagnosis, or treatment, talk with a healthcare professional. If you work with a therapist, plan experiments with them. You decide whether to do any experiment, and you do it at your own risk.
Thoughtline
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Stuck on a thought that won't let go? Thoughtline walks you through the thought record, a core cognitive behavioral therapy (CBT) technique, one gentle step at a time. Name the feeling, weigh the thought, find a more balanced view — in a few minutes. What you write is encrypted on your device; no one else can read it. THOUGHT RECORD IN 6 STEPS Describe the situation, catch the automatic thought, pick your emotions and their intensity. Weigh the evidence for and against, then land on a balanced thought. Re-rate how you feel at the end and see what shifted. MOOD JOURNAL Log your mood in seconds. A trend chart and emotion breakdown help you notice patterns — in calm, non-judgmental language. ACTIVITY PLANNING Use behavioral activation to plan small steps that lift your mood; rate enjoyment and achievement to learn what actually helps. BRING IT TO THERAPY (Pro) Turn entries from any date range into a clean PDF report for your therapist. The report is created on your device and never uploaded. PARTNER WIDGET Share just your current mood with someone you love, right on their Home Screen. Your writing is never shared, and you can pause sharing anytime. PRIVATE BY DESIGN • Free-text entries are encrypted on your device • Your data is never sold or used for ads • Delete your account and all entries whenever you want SUPPORT IN HARD MOMENTS If your writing suggests you're going through something difficult, Thoughtline shows support lines near you. FREE AND PRO Mood logging is free and unlimited. The free plan includes 10 thought records and 12 activity logs each month. Thoughtline Pro unlocks unlimited entries and the therapist report — monthly or yearly subscription, or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; payment is charged to your Apple Account. Manage or cancel anytime in your App Store account settings. Thoughtline is a self-help tool and is not a substitute for medical diagnosis or treatment. If you are in crisis, call your local emergency number. Privacy Policy: https://thoughtline-app.web.app/en/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Behavioral Experiment at none against Thoughtline's 3. Thoughtline's advantage is update cadence (every 9 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Thoughtline sells 3 in-app purchases, starting at $9.99 per month. Behavioral Experiment asks for nothing beyond the download.
Behavioral Experiment ships an update every 3 weeks, Thoughtline every 9 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.
| Parameter | Behavioral Experiment | Thoughtline |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 7 MB | 24 MB |
| Age rating | 12+ | 12+ |
| Developer | Everyday Insight LLC | SITKI TUGRUL YUKSEL |
In-app purchases
Behavioral Experiment
No in-app purchases
Thoughtline
- Thoughtline Pro · Monthly$9.991 Month
- Thoughtline Pro · Yearly$39.991 Year
- Thoughtline Pro · Lifetime$79.99
Questions
Is Behavioral Experiment free?
Is Thoughtline free?
Do Behavioral Experiment or Thoughtline have ads?
Which is updated more often, Behavioral Experiment or Thoughtline?
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