Comparison

Callback Freeverb vs DashJam

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Callback Freeverb

This app offers a classic algorithmic reverb effect based on the Freeverb algorithm. It adds depth, space, and atmosphere to audio sources, creating lush, spacious ambience. Designed for mono use, it provides a smooth, musical reverb tail suitable for vocals and synthesizers.

Highlights
  • Classic Freeverb algorithm
  • Schroeder/Moorer reverb topology
  • Comb and allpass filters
  • Mono operation
  • Adds depth and space to audio
  • Smooth, musical reverb tail
Features
Read full description

A classic algorithmic reverb effect based on the Freeverb algorithm by Jezar at Dreampoint. A Freeverb-style Schroeder/Moorer reverb based on the classic 8-comb + 4-allpass topology, with simplified controls and no stereo spread. This reverb creates lush, spacious ambience through a network of comb and allpass filters. Freeverb is widely used in electronic music production, ambient music, and sound design to add depth, space, and atmosphere to audio sources. The algorithm provides a smooth, musical reverb tail that works well on everything from vocals to synthesizers. This reverb only functions in mono and provides no stereo imaging, and the user can expect the same behavior as a classic Freeverb implementation otherwise.

About

DashJam

Read full description

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/

Screenshots

Callback Freeverb4 screens
DashJam4 screens

Verdict

The call

The clearest difference is in-app purchases: Callback Freeverb 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DashJam sells 3 in-app purchases, starting at $0.99 per month. Callback Freeverb asks for nothing beyond the download.

Scorecard1 real difference · 8 level
Callback Freeverb versus DashJam: the parameters behind the verdict, then further details
ParameterCallback FreeverbDashJam
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequency—Every 9 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size7 MB2 MB
Age rating4+9+
DeveloperCallback Audio, LLCErik Gruschka

In-app purchases

None

Callback Freeverb

No in-app purchases

3 purchases

DashJam

Subscriptions2
  • Pro Monthly$0.991 Month
  • Pro Yearly$8.991 Year
One-time1
  • DashJam Pro Lifetime$17.99

Questions

Is Callback Freeverb free?
Callback Freeverb is free to download, with no in-app purchases.
Is DashJam free?
DashJam is free to download, with in-app purchases available.
Do Callback Freeverb or DashJam have ads?
Neither Callback Freeverb nor DashJam shows ads.

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