NerdTrack vs OTC Memo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NerdTrack
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NerdTrack records your location in a CSV file on your phone. No other data is collected and no data ever leaves your device. Full source is available at https://nerdtrack.org There is no interactive UI. Just grant location permissions, and it will log in the background. To stop logging, remove location permissions or uninstall app. The app uses the SignificantLocation and CLVisit APIs. The accuracy is low but it has very low battery usage. To get your log, open the Files app, and look for locations.csv in the Nerd Track folder. A config file will be created in the app's documents folder the first time it runs. Edit that file to change logging frequency or minimal distance. Force-stop and restart app to reload config. By default, the app records location: - Every 15 minutes, if you have moved more than 300 meters The CSV logs timestamps in the unix epoch format. Use 'dateconv -i %s' to convert it to something more human-readable. Some helper scripts are available at https://nerdtrack.org
OTC Memo
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Ever find it a hassle to long-press, select, and copy when copying notes? This app splits sentences based on line breaks during editing, allowing you to copy each one with a one tap. Simply write your notes with line breaks, and they'll automatically organize like “tags.” Copy with a single tap, making it perfect for use as a “phrase dictionary” or “template text.” Copied tags change color for instant recognition. Full-text search supported. Supports creating QR codes for memos and scanning QR codes. Supports the memo sharing button.
Screenshots
Verdict
The clearest difference is update cadence: OTC Memo at weekly against NerdTrack's every 2 months. OTC Memo also leads on device support (3 vs 1) and iOS requirement (16.4 vs 18.0). On price, ads and in-app purchases 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.
NerdTrack ships an update every 2 months, OTC Memo weekly. Both last shipped on October 25, 2026.
| Parameter | NerdTrack | OTC Memo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 0 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Ello Skelling Productions | Katsushi Kawamori |
In-app purchases
NerdTrack
No in-app purchases
OTC Memo
No in-app purchases









