Lune vs Chord Training Assistant
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lune
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Lune is a period tracker that keeps your records to yourself. No account, no servers of ours — your logs live on your iPhone, and every analysis runs on the device. HONEST PREDICTIONS Predictions learn from your own history: a single date with a small margin when your cycle is regular, an honest date range when it varies, and a plain note when more records will help. For reference only — Lune is a journal, not a medical device. MOON AND MEANING Sunrise, sunset, moon phases and solar terms, always in view. A calendar that follows the sky. LUMI, A QUIET COMPANION A small companion who grows alongside your records, at your own pace. HEALTH INSIGHTS WITH PLUS (OPTIONAL) Connect Apple Health to see your data in a cycle-aware view. Data comes from Apple Health, collected by your iPhone and Apple Watch; Lune uses no sensors and computes everything locally. WIDGETS Cycle day and countdown on your Lock Screen and Home Screen, with a discreet mode that shows only the moon. Lune Plus: US$2.99/month, US$12.99/year, or US$24.99 once for lifetime. Prices may vary by region; see the app. Terms: https://lune-82z.pages.dev/terms Privacy: https://lune-82z.pages.dev/privacy
Chord Training Assistant
This app helps musicians learn and practice chords with a vast library of over 800 options. It includes a metronome, practice history tracking, and a chord library, with a VIP plan offering unlimited practice and an ad-free experience.
- Supports 800+ chords
- Built-in metronome
- Practice history and statistics
- Comprehensive chord library
- Dark mode support
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- Function Description 1. Support 800+ chords 2. Powerful metronome 3. Practice history / statistic 4. Chord library 5. Support dark mode - VIP Plan Monthly plan: $1.99 Yearly plan: $12.99 Permanent Plan: $19.99 VIP functions: Unlimited practice chord number, no ads., unblock future new VIP functions. - Links Terms of Use： https://blog.osfpu.com/random-chord-terms-of-use/ Privacy Policy：https://blog.osfpu.com/random-chord-privacy-policy/ User Support： https://blog.osfpu.com/random-chord-support/
Screenshots
Verdict
The clearest difference is in-app purchases: Lune at none against Chord Training Assistant's 3. Chord Training Assistant's advantage is update cadence (every 2 weeks vs every 41 months) and iOS requirement (9.0 vs 15.0). 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. Chord Training Assistant sells 3 in-app purchases, starting at $1.99 per month. Lune asks for nothing beyond the download.
Lune ships an update every 41 months, Chord Training Assistant every 2 weeks. Both last shipped on October 24, 2026.
| Parameter | Lune | Chord Training Assistant |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 41 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 237 MB | 40 MB |
| Age rating | 17+ | 4+ |
| Developer | 宏岩 王 | 世杰 宋 |
In-app purchases
Lune
No in-app purchases
Chord Training Assistant
- Monthly Plan$1.991 Month
- Yearly Plan$13.491 Year
- Permanent VIP$19.99
