Chaptr vs Material Numbers
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chaptr
Easily create chapter marks for audio productions on your iPhone or Apple Watch. Import audio files, add marks with simple clicks, and export them in various podcast-friendly formats. Adjust mark timing and listening speed for efficient workflow.
- Create chapter marks on iPhone and Apple Watch
- Import audio from cloud services or web
- Add marks with simple earbud clicks
- Edit mark timecodes
- Adjust playback speed
- Export to multiple podcast formats
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Create chapter marks for your audio production with your iPhone on the Go! Import your audio files from all document providing Apps like Dropbox or iCloud Drive or download them directly from the web. Add marks while listening: Click two or three times with your Apple EarPods to add marks while your iPhone is locked. You can also configure your AirPods to work with Chaptr. Chaptr is also available on your Apple Watch! Create marks from your wrist while you listen to your audio productions! Add edit marks at positions where your production needs improvement. Adjust the timecode of already created marks and move them to their exact position. Choose your favorite listening speed to work faster. Export the marks you created to * Podigee * mp4chaps file format (compatible with Reaper, Auphonic) * Reaper specific chapter marks file format (supports mark colors) * Podlove Simple Chapters Supported audio formats: MP3 und M4A
Material Numbers
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M Numbers: Quick lookup of base metal weldability grouping numbers (Material Numbers) for welding procedure and performance qualification. Data is provided by C-spec from the master source used for generation, proof-reading and maintenance of AWS B2.1 Table C.1 and C.2.
Screenshots
Verdict
The clearest difference is price: Material Numbers at Free against Chaptr's $2.99. Material Numbers also leads on update cadence (every 2 days vs every 6 weeks) and iOS requirement (13.0 vs 16.0). On 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
Material Numbers is free to download; Chaptr costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Chaptr ships an update every 6 weeks, Material Numbers every 2 days. The most recent releases landed on October 3, 2026 and September 29, 2026 respectively.
| Parameter | Chaptr | Material Numbers |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.5 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 6 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Stefan Trauth | ASMEIX CORPORATION |
In-app purchases
Chaptr
No in-app purchases
Material Numbers
No in-app purchases
Questions
Is Chaptr free?
Is Material Numbers free?
Do Chaptr or Material Numbers have ads?
Which is updated more often, Chaptr or Material Numbers?
Other comparisons
