DashJam vs Bytebeat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DashJam
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DashJam quietly records your whole rehearsal so you never lose the moment you forgot to hit record for. Start a session and keep playing. DashJam holds the most recent 15 minutes of audio in a rolling buffer. When something good happens — a riff, a take, a happy accident — tap Save Jam and pick exactly the stretch you want right on the live waveform. The moment lands in your Library as a shareable audio file. No more "wait, were we recording?" WHY MUSICIANS LIKE IT • Record continuously, decide later. The last 15 minutes are always there to save — you choose the moment after it happens, not before. • Pick it on the waveform. Save Jam opens a live waveform; drag the handles to grab just the part that mattered, then confirm. • Save from the Lock Screen. A Live Activity and Dynamic Island show the recording state and put a save action a tap away while your phone is in your pocket or on a stand. • It survives a crash. If the app gets killed mid-session, your rolling buffer is still there when you reopen. • A Library you'll actually browse. Saves get evocative auto-generated names ("Crimson Spiral", "Velvet Comet") you can rename, with in-app playback. • Your files, your way. Saved jams export as .m4a and show up in the Files app under DashJam — share them by AirDrop, Messages, or any share sheet. • Designed for iOS. Clean, content-first interface built on the latest iOS design system, tinted recording-red. • English and German, with an in-app language override. PRIVATE BY DESIGN Audio never leaves your device. The rolling buffer lives in the app's cache; saved jams live in the app's documents folder. Nothing is uploaded, ever — you decide if and when a recording leaves your iPhone by sharing or exporting it. There are no accounts, no sign-in, and no tracking. DashJam needs microphone access to record, and keeps recording in the background so a session keeps running while you play. That's it. DASHJAM PRO — OPTIONAL Everything above is free. DashJam Pro unlocks a rolling buffer of up to 60 minutes, automatic jam detection (Beta), trimming saved jams on the waveform — keeping the original or replacing it — Places (arrival and leave reminders at your rehearsal spots), and the audio quality/mono picker. • DashJam Pro — Yearly: 1-year auto-renewing subscription • DashJam Pro — Monthly: 1-month auto-renewing subscription • DashJam Pro — Lifetime: one-time purchase, does not renew Prices are shown in your local currency inside the app, on the DashJam Pro screen, before you buy. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscription in your Apple Account settings after purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://erigrus.de/dashjam/privacy/
Bytebeat
Transform mathematical formulas into unique music by writing code. Edit your creations in real-time while they play, visualize the sound waves, and explore various modes for different audio outputs. Export your generated music to WAV format.
- Formula-based music generation
- Real-time editing during playback
- Waveform visualization
- Multiple audio modes (Bytebeat, Signed, Floatbeat)
- Export to WAV format
- Includes 29 preset formulas
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t*(42&t>>10) That one line is the whole song. Bytebeat turns a formula straight into sound. It evaluates your expression while t counts up from zero, one step at a time, and writes the result out as the waveform. No synthesizer, no audio files, no samples. The formula is the music. ■ Edit while it plays - Rewrite the formula without stopping playback. t keeps running - Change a single character and the song becomes something else - A keypad holding only the characters that appear in bytebeat formulas, so one tap is one character ■ See the waveform - An oscilloscope draws the samples that are actually playing - Traces are aligned to the rising edge, so the wave stays still instead of scrolling - Instruction count and stack depth are shown too ■ 29 famous formulas - Includes the one-liners from the experiments viznut published in 2011 - Save the ones you like to favorites with your own names ■ Three modes - Bytebeat: result & 255 mapped to 0...255, the way the original sounded - Signed: treated as signed 8-bit - Floatbeat: the result used directly as a -1...1 waveform, where sin and cos come alive ■ Change the speed of t - 500 to 48000 Hz. The original bytebeat ran at 8000 Hz - Slower runs lower, faster runs higher ■ Export to WAV - 8-bit, 8000 Hz, mono, which is exactly what bytebeat is - 10 seconds, 30 seconds, 1 minute or 3 minutes ■ What you can write - The variable t, and the constants PI and E - Arithmetic, bitwise operators, shifts, comparison, logic, the ternary operator - sin cos tan asin acos atan abs floor ceil round sqrt exp log sign int pow min max atan2 mod - Everything is computed in Double and rounded to 32-bit integers only for bitwise operations and shifts. This matches JavaScript's ToInt32, so formulas you find on the web play as they are ■ No connection - No account to create - No ads, no tracking - The app never connects to the internet. It works on a plane Many of the presets come from the experiments Ville-Matias Heikkila (viznut) published in 2011.
Screenshots
Verdict
The clearest difference is in-app purchases: Bytebeat at none against DashJam's 3. On price, ads, device support and iOS requirement 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. DashJam sells 3 in-app purchases, starting at $0.99 per month. Bytebeat asks for nothing beyond the download.
| Parameter | DashJam | Bytebeat |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.3 (3 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 9 days | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 3 MB |
| Age rating | 9+ | 4+ |
| Developer | Erik Gruschka | Ryo Tsudukihashi |
In-app purchases
DashJam
- Pro Monthly$0.991 Month
- Pro Yearly$8.991 Year
- DashJam Pro Lifetime$17.99
Bytebeat
No in-app purchases









