Self timer vs Chemrix
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Self timer
Capture group photos and selfies with a customizable delay timer. Adjust flash settings and choose between front or rear cameras. Easily crop and share your favorite moments.
- Customizable delay timer
- Flash adjustment
- Front/rear camera selection
- Photo cropping
- Direct sharing to social media
- Save to photo album
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Have you ever felt excluded from your favorite photos? Well now you can be part of them too! Set the Time you want, get everyone ready in the right pose and then get in among your friends. Adjust the Flash if the lighting isn’t sufficient and choose whether to use the front or rear camera. Disappointing photo? No problems, the crop function puts everything in the right place. All you have to do is share your favorite moments with Facebook, Twitter, email, sms, print them or save them in your photo album. Have Fun!
Chemrix
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Master essential math, physics and chemistry formulas with Chemrix. Look up formulas effortlessly for daily study, then take quizzes to test how well you’ve learned them. A handy all-in-one tool for students and science learners.
Screenshots
Verdict
The clearest difference is update cadence: Chemrix at weekly against Self timer's every 3 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Self timer ships an update every 3 months, Chemrix weekly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Self timer | Chemrix |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (38 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 38 — better | — |
| Update frequency | Every 3 months | Weekly — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 9 MB | 8 MB |
| Age rating | 4+ | 17+ |
| Developer | luca calciano | 亚涛 冯 |
In-app purchases
Self timer
No in-app purchases
Chemrix
No in-app purchases
