Tone Generator! vs IOTA Readout
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tone Generator!
Create and play a wide range of audio tones with adjustable frequencies and waveforms. Generate up to 12 simultaneous tones with individual volume control. Modify tones in real-time for versatile sound generation.
- Generate tones from 20 Hz to 15000 Hz
- Adjust tones while playing
- Play up to 12 tones simultaneously
- Adjust individual tone volumes
- Supports sine, square, and triangle waveforms
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A flexible tone generator. - Generate tones between 20 Hz and 15000 Hz in 0.1 Hz increments - Adjust tones while they are playing - Play up to 12 different tones simultaneously and adjust volumes of individual tones - Supports sine, square, and triangle waveforms
IOTA Readout
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IOTA Reader was designed to visualize messages generated by IOTA devices, which provide data on usage (power, water, gas, heat) or other measurements: temperature, humidity, pressure, distance etc. The application allows users to connect devices using ID and passcodes provided with the devices and then view collected and processed data on dynamic charts. Users may set alerts individually for each device and get notifications. For users’ convenience the devices can be individually named. Each user may have access to multiple devices and the same device may be accessed by many users, if they have access to correct ID and passcode.
Screenshots
Verdict
The clearest difference is price: IOTA Readout at Free against Tone Generator!'s $0.99. IOTA Readout also leads on update cadence (every 7 months vs every 61 months). Tone Generator!'s advantage is iOS requirement (8.0 vs 13.0). 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
IOTA Readout is free to download; Tone Generator! costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Tone Generator! ships an update every 61 months, IOTA Readout every 7 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Tone Generator! | IOTA Readout |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.7 (23 ratings) — better | — |
| Positive reviews | 88.1% of reviews | — |
| Number of ratings | 23 — better | — |
| Update frequency | Every 61 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 5 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Deelstra | Every European Digital Poland sp. z o.o. |
In-app purchases
Tone Generator!
No in-app purchases
IOTA Readout
No in-app purchases
Questions
Is Tone Generator! free?
Is IOTA Readout free?
Do Tone Generator! or IOTA Readout have ads?
Which is updated more often, Tone Generator! or IOTA Readout?
Other comparisons
