TuningForkPlus vs I
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TuningForkPlus
Generate fundamental audio waveforms like sine, square, triangle, and sawtooth with precise control over frequency, amplitude, phase, and harmonics. Export high-quality audio for music production, sound design, and acoustic testing.
- Sine, square, triangle, sawtooth wave generation
- Precise frequency control (A4 standard, custom Hz)
- Amplitude, phase, and multi-harmonic overlay
- Real-time complex sound synthesis
- High-quality audio export
- Music production and sound design tool
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"Tuning Fork Plus" is a professional audio waveform synthesis tool that generates four fundamental wave types: sine, square, triangle, and sawtooth. It offers precise control over frequency (with A4 standard and custom Hertz values), amplitude, phase, and multi-harmonic overlay for real-time complex sound synthesis. With high-quality audio export capabilities, it is perfect for music production, sound design, auditory experiments, and acoustic testing, making it an essential tool for audio professionals and researchers. Subscription Information: • Subscription Name: Pro Membership • Options: • $0.99/month, auto-renewable • $5.99/year, auto-renewable • $9.99 lifetime access (one-time purchase, no renewal) Prices shown in USD for reference. Actual prices may vary by region. Subscription Terms: 1. Subscribing unlocks all premium features in the app. 2. Subscription options: Lifetime / Monthly / Yearly. Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period. 3. Your Apple ID account will be charged within 24 hours prior to the end of the current period and automatically renew the subscription. You can disable auto-renewal via iOS Settings: Settings > Apple ID > Subscriptions. 4. Current period cancellations are not allowed, but auto-renewal can be disabled at any time before the next billing cycle. The current subscription remains active until its expiry. 5. If a free trial is offered, it will convert to a paid subscription automatically unless canceled in advance. All purchases are handled by your Apple account, and refunds must be requested through Apple Support. The app cannot process refund requests directly. 6. Subscribing means you have read and agreed to the Privacy Policy and Terms of Use. Contact us: liyangong697@gmail.com Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/gly699/home/privacy_policy
I
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INotes is a simple and elegant task management app designed for iPhone. Features: • Create and manage tasks • Categories • Search tasks • Sort tasks • Due dates • Dark Mode • No account required • Local storage Fast, private and easy to use.
Screenshots
Verdict
The clearest difference is in-app purchases: I at none against TuningForkPlus's 3. I also leads on update cadence (every 2 weeks vs every 3 months) and iOS requirement (12.0 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. TuningForkPlus sells 3 in-app purchases, starting at $0.99 per month. I asks for nothing beyond the download.
TuningForkPlus ships an update every 3 months, I every 2 weeks. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.
| Parameter | TuningForkPlus | I |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 27 MB |
| Age rating | 4+ | 9+ |
| Developer | 丽俨 龚 | ACEBOTT |
In-app purchases
TuningForkPlus
- Monthly$0.991 Month
- Yearly3 Days trial$5.991 Year
- Lifetime$9.99
I
No in-app purchases









