# Sailer: MP3 Player — Play local audio/music files > Audio player with interactive waveform, markers, speed control, and spectrogram. (iPhone/iPad app by Shu Kyogoku.) - Source: https://appshunter.io/ios/app/sailer-mp3-player/id6756638375 (this page in markdown: same URL + `.md`) - Developer: [Shu Kyogoku](https://appshunter.io/developer/1703508274) - Category: Music, Utilities - Price: Free - Rating: 3.50/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 26.0 · 11 MB - Languages: American English, Japanese - Released: 2026-01-02 - Data updated: 2026-09-04 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/sailer-mp3-player/id6756638375/reviews.md ## What is Sailer? Sailer is a simple audio file player with a waveform display. Just scroll the waveform and go straight to the moment you’re looking for — more intuitive and precise than dragging a tiny seek bar. The marker feature makes it easy to repeat specific parts, perfect for language learning, transcription, music practice, and more. Supports MP3, M4A, WAV, FLAC, MP4, and other common formats. Features: • Seek by scrolling the waveform. • Pinch-to-zoom for more precision. • Use markers to bookmark specific positions*. • Double-tap (or two-finger tap) between markers to play only that region (loop supported). • Adjust playback speed from 0.25× to 4.0×. • Adjust the pitch and apply audio effects. • Add notes for future reference. *Markers and notes are saved as a sidecar file, so your original audio file remains unmodified. Pro Features (one-time purchase): • Display a spectrogram. • Export the selected region. • Export markers as TXT, CSV, or JSON. • Transcribe the selected region. ## Key features - Interactive waveform seeking - Marker creation for repeating sections - Adjustable playback speed (0.25x to 4.0x) - Looping of selected regions - Spectrogram display - Add notes to audio files ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/sailer-mp3-player/id6756638375/reviews.md ### 2/5 — Locking export behind pro when it was free before? Not grandfathering long time users? A shame. *2026-08-17* I understand devs gotta make money. But locking features away that were available behind a paywall… it’s a poor solution. Previous owners weren’t grandfathered in either. I really liked this app. Elegant. Well coded. Could handle hour long recordings easily. A shame. ## Frequently asked questions about Sailer ### What is Sailer? Sailer is a free audio file player designed with an interactive waveform display for precise navigation. It supports features like markers, adjustable playback speed, and looping, making it useful for learning and transcription. ### What audio formats does Sailer support? Sailer supports a wide range of audio formats including MP3, M4A, M4B, WAV, FLAC, and also video formats like MP4 and MOV for audio extraction. ### Can I repeat specific parts of an audio file with Sailer? Yes, Sailer allows you to set markers and then double-tap or two-finger tap between them to play only that selected region. Looping of these sections is also supported. ### How accurate is the waveform seeking in Sailer? The interactive waveform view in Sailer enables precise and intuitive seeking, even in very long audio files. Pinch-to-zoom functionality further enhances precision. ### Does Sailer have ads? No, Sailer is ad-free, providing an uninterrupted listening experience for all its features. ### What devices is Sailer available on? Sailer is available for both iPhone and iPad devices, offering its advanced audio playback features across Apple's mobile platforms. ### How often is Sailer updated? Sailer was last updated on June 8, 2026, with version 1.5.0. This indicates active development and ongoing improvements to the application. ### Is Sailer suitable for language learning? Yes, Sailer is highly suitable for language learning due to its ability to repeat specific sections using markers and adjust playback speed, allowing users to practice pronunciation and comprehension effectively. ## Version history (last 5 releases) ### 2.0.1 — 2026-08-29 ・Stability improvements. ### 2.0.0 — 2026-08-17 Pro version (one-time purchase) is now available. ・Added pitch adjustment and audio effects ・Loop can now be toggled during playback ・Added support for Opus files ・Markers can now be exported. (Pro) ・Some features have moved to the Pro version ### 1.5.0 — 2026-06-08 • You can now display a spectrogram. ### 1.4.0 — 2026-05-30 • You can now set metadata when exporting. • You can now set the speed when exporting. ### 1.3.2 — 2026-05-21 • Minor UI improvements ## Apps similar to Sailer | App | Rating | Price | Category | | --- | --- | --- | --- | | [MIDI-Probe](https://appshunter.io/ios/app/midi-probe/id6756924036) | — | Free | Music | | [Offline Music Player: lossless](https://appshunter.io/ios/app/offline-music-player-lossless/id6758553910) | 5.0 (1) | Free | Music | | [iLyrics-Music Lyrics Widget](https://appshunter.io/ios/app/ilyrics-music-lyrics-widget/id6758751610) | 4.0 (3) | Free | Music | | [Mixroom - AI Music Editor](https://appshunter.io/ios/app/mixroom-ai-music-editor/id6759779450) | 5.0 (1) | Free | Music | | [Cloudflow Music](https://appshunter.io/ios/app/cloudflow-music/id6761190341) | 3.5 (4) | Free | Music | | [Field. - Field Recorder](https://appshunter.io/ios/app/field-field-recorder/id6760171759) | 4.9 (7) | Free | Music | ## More apps by Shu Kyogoku - [Lossless Audio Extractor](https://appshunter.io/ios/app/lossless-audio-extractor/id6462839131) - [Epoch: History Timeline Maker](https://appshunter.io/ios/app/epoch-history-timeline-maker/id6470111481) All apps by Shu Kyogoku: https://appshunter.io/developer/1703508274 ## Related topics [shu kyogoku](https://appshunter.io/ios/topics/shu-kyogoku) · [sailer](https://appshunter.io/ios/topics/sailer) · [fiero audio](https://appshunter.io/ios/topics/fiero-audio) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*