ExpiWell vs Mathly AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ExpiWell
This app facilitates experience sampling and ecological momentary assessment for research. It allows users to share opinions and experiences through surveys and daily diaries, ensuring data privacy. Researchers can collect valuable insights through this platform.
- Experience sampling method (ESM)
- Ecological momentary assessment (EMA)
- Surveys and mood tracking
- Daily diary entries
- Just-in-time adaptive interventions (JITAI)
- Digital ethnography
Read full descriptionHide full description
ExpiWell is the premier experience sampling method (ESM) and ecological momentary assessment (EMA) app for surveys, mood tracking, daily diary, just-in-time adaptive interventions (JITAI), and digital ethnography. Market researchers, polling companies, and social scientists want your valuable opinions and experiences. Using our free app, you can share your experiences and opinions. We have real surveys that you can take. ExpiWell® ensures your privacy. We will not forward, sell, or transfer your information. ExpiWell Privacy Policy - https://app.expiwell.com/privacy ExpiWell Terms of Use - https://app.expiwell.com/tos
Mathly AI
This app acts as a personal AI math tutor, providing step-by-step explanations for a wide range of math problems. It features a powerful graphing calculator and includes over 140 formulas across six subjects. Notes sync across devices, and an Apple Watch app is also available.
- AI step-by-step solver (text or photo)
- Scientific & calculus calculator
- Graphing calculator with calculus tools
- 140+ formulas across 6 subjects
- Cross-device notes sync
- Apple Watch app
Read full descriptionHide full description
Mathly is your personal AI math tutor — built to help you actually understand math, not just get answers. SOLVE ANY PROBLEM Type a question or snap a photo, and Mathly explains it step by step, the way a good tutor would. From basic algebra to calculus, you'll see how to get the answer — not just the answer. POWERFUL GRAPHING CALCULATOR Plot multiple functions, find intersections, see derivatives as live curves, shade the area under a curve, and tap any point to read its slope and coordinates. EVERYTHING YOU NEED - AI step-by-step solver (text or photo) - Scientific & calculus calculator - Graphing calculator with calculus tools - 140+ formulas across 6 subjects - Notes that sync across your devices - Apple Watch app included MATHLY PRO Upgrade for unlimited AI solving, photo solving, unlimited notes, and unlimited saved formulas. Made for students, by a student. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: [https://sites.google.com/view/mathlyai/home]
Screenshots
Verdict
The clearest difference is review sentiment: Mathly AI at 100% against ExpiWell's 39%. Mathly AI also leads on rating (5.0 vs 4.6). ExpiWell's advantage is in-app purchases (none vs 1) and ratings volume (1.5K vs 7). On price, ads and device support 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. Mathly AI sells 1 in-app purchase, starting at $3.99 per month. ExpiWell asks for nothing beyond the download.
Mathly AI holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: ExpiWell has 1.5K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 39% of ExpiWell's written reviews are positive against 100% of Mathly AI's.
| Parameter | ExpiWell | Mathly AI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (1.5K ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 39.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 1.5K — better | 7 |
| Update frequency | Every 5 days | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 35 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Expiwell, Inc. | Karen Nochimowski |
Customer experience
ExpiWell
Mathly AI
Bugs and requests
ExpiWell
Reported bugs
3 issues- Login issues
- Incompatibility with certain devices
- Crashing during surveys
Requested features
2 requests- Better notification system
- More seamless interface
Mathly AI
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ExpiWell
No in-app purchases
Mathly AI
- Math Pro$3.991 Month
