MP3Gain vs Jerry's Simple MP3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MP3Gain
This app normalizes the volume of your audio files, ensuring consistent loudness across songs, podcasts, and uploads. It offers multiple analysis modes and presets for easy use, with batch processing for multiple files. Listen to comparisons before exporting to maintain audio quality and metadata.
- Volume normalization
- Multiple analysis modes (Peak, RMS, EBU R128)
- Built-in and custom presets
- Batch processing
- Listen before export
- Preserves metadata and album art
- Supports MP3, FLAC, M4A, WAV, AIFF, OGG
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Make all your audio the same volume — without touching the volume dial. Ever jump from one song to the next and grab for the volume button? Or finish a podcast that's twice as loud as the one before? MP3Gain fixes that. It measures the true loudness of your audio and applies exactly the right amount of gain, so everything you listen to, share, or upload sounds even and professional. Quick for everyday fixes. Precise for creators. Three measurement modes cover every job: • Peak — match tracks to a target peak level (in dB). • RMS — match the average energy of your tracks for consistent perceived volume. • EBU R128 (LUFS) — the international loudness standard used by streaming and broadcast platforms, with true-peak limiting. Built-in presets Start in one tap with presets tuned to real-world targets, and save your own for repeat jobs. • Music — RMS -20 dB • Podcast — EBU R128 -16 LUFS • Voice — EBU R128 -18 LUFS • Streaming Video — EBU R128 -14 LUFS • Default — EBU R128 -23 LUFS Batch processing Import a whole album, playlist, or batch of files and normalize them all at once. Adjust one file and apply the same settings to every file in your list. Progress is shown per file, and you can cancel anytime. Hear it before you export Play the original and the processed version side by side in the app, so you know it sounds right before you save or share it. Keep your music intact MP3Gain preserves embedded album art and metadata. Lossy formats keep their original bitrate; lossless files are processed without additional lossy compression. Import from anywhere • Select files from the Files app • Pull tracks straight from your Music Library • Open an audio file in MP3Gain from any app Note: DRM-protected tracks — for example, Apple Music subscription titles — can't be imported or processed. Supported formats MP3, FLAC, M4A, WAV, AIFF, and OGG. MP3Gain Pro The free plan processes up to 3 files per day — perfect for quick fixes. Upgrade to MP3Gain Pro for unlimited processing: • Yearly — $9.99/year • Lifetime — pay once at $19.99 and unlock forever Subscriptions renew automatically and can be managed or cancelled anytime in your Apple ID settings. Payment is charged to your Apple ID account at confirmation of purchase. The subscription automatically renews 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 or turn off auto-renewal at any time in your Apple ID account settings. Privacy Policy: https://getseasoft.com/legal/privacy-policy Terms of Use: https://getseasoft.com/legal/terms-of-service
Jerry's Simple MP3
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Simple MP3 is a fast, beautiful local music player built for real listening — on your iPhone, iPad, and in the car. NO STREAMING ACCOUNT REQUIRED Play the audio already on your device. Your library stays private on your phone. PLAYLISTS THAT FEEL FAMILIAR • Create and manage playlists with ease • Liked Songs and Recently Played built in • Add to playlist and queue from any track • Same collections available when you play on the road MADE FOR THE DASH • Browse Playlists, Jellyfin Offline, Albums, Artists, Songs, and Recently Played from a compatible car display • Steering-wheel and Now Playing controls • Dark, high-contrast “car night” UI designed for night driving JELLYFIN OFFLINE SYNC • Connect to your Jellyfin server (LAN or manual URL) • Download tracks for offline play • Offline library works in the app and on the road • Optional Wi‑Fi-only downloads MADE FOR THE ROAD • Drive Mode — oversized controls and one-tap resume • Resume last session (queue + position) • Mini player + immersive Now Playing • Auto Drive Mode when a car display connects (optional) IMPORT & TOOLS • Quick Connect — upload audio over your local Wi‑Fi from another device • YouTube → Audio — look up titles and import files you already have (App Store–safe workflow) • Search, library browser (songs, albums, artists, folders), shuffle & repeat FAST & POLISHED • Instant library from cache • Deep violet night theme with electric teal accents • Light theme available in Settings PERMISSIONS • Media Library — scan and play local music • Network — Jellyfin sync and Quick Connect only (optional) • Local network — discover servers and LAN uploads Simple MP3 is free of streaming clutter. Your files. Your playlists. Your car.
Screenshots
Verdict
The clearest difference is in-app purchases: Jerry's Simple MP3 at none against MP3Gain's 6. MP3Gain's advantage is iOS requirement (16.6 vs 26.2). On price, update cadence, 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. MP3Gain sells 6 in-app purchases, starting at $1.99 per month. Jerry's Simple MP3 asks for nothing beyond the download.
MP3Gain ships an update weekly, Jerry's Simple MP3 every 2 weeks. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.
| Parameter | MP3Gain | Jerry's Simple MP3 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 13.8% of reviews | — |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 16.6 — better | 26.2 |
| Further details — not scored | ||
| Size | 18 MB | 9 MB |
| Age rating | +4 | 4+ |
| Developer | SEASOFT LTD. | KarpiLabs LLC |
In-app purchases
MP3Gain
- MP3Gain Premium Monthly Plan$1.991 Month
- MP3Gain Pro(Yearly)$9.991 Year
- WMA Gain$6.99
- MP3, M4A Gain$6.99
- Gain all audio format$9.99
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- MP3Gain Pro (Lifetime)$19.99
Jerry's Simple MP3
No in-app purchases









