Speech Jammer vs Notation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Speech Jammer
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Speech Jammer: The Ultimate Delayed Auditory Feedback App Ever tried talking while hearing your own voice with a slight delay? It's surprisingly difficult! Speech Jammer uses the psychological phenomenon of delayed auditory feedback (DAF) to create a unique and entertaining experience. WHAT IS SPEECH JAMMER? Speech Jammer disrupts your speech by playing back your voice with a slight delay through headphones. This delay confuses your brain's speech production system, making it extremely challenging to speak fluently. It's science based fun! KEY FEATURES Real time audio processing with adjustable delay Professional grade audio quality Customizable delay settings for optimal effect Simple, intuitive interface Works with any headphones or earbuds Recording functionality to save your hilarious attempts Perfect for parties, challenges, and social gatherings PERFECT FOR: Party Games: Challenge friends to say tongue twisters Public Speaking Practice: Improve focus and concentration Speech Therapy: Professional DAF therapy applications Entertainment: Hours of fun trying to beat the effect Social Media Content: Create funny challenge videos Education: Demonstrate psychological phenomena HOW IT WORKS The app records your voice through your device's microphone and plays it back through your headphones with a precise delay (typically 100 to 300 milliseconds). This delay interferes with your brain's natural feedback loop for speech, making it difficult to maintain fluent speech. SCIENTIFIC BACKGROUND Delayed Auditory Feedback has been studied extensively in psychology and speech therapy. The effect demonstrates how dependent our speech production is on auditory feedback. It's used professionally in speech therapy and research. EASY TO USE Connect your headphones or earbuds Grant microphone permission Start the jammer Try to speak normally, it's harder than you think! PRIVACY FOCUSED All audio processing happens locally on your device. No data is collected or transmitted. Your recordings stay private and under your control. PERFECT FOR ALL AGES Safe, clean entertainment suitable for everyone. No in app purchases, no subscriptions, just pure fun! Whether you're looking for party entertainment, speech practice tools, or just want to experience this fascinating psychological effect, Speech Jammer delivers an engaging and scientifically interesting experience. Download now and challenge yourself. Can you beat the speech jammer effect? Note: Headphones or earbuds are required for this app to work properly.
Notation
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Notation is professional sheet music notation for composers, arrangers, and music students. Capture a motif at the piano, tweak harmony on your commute, or share a link before rehearsal—all on iPhone or iPad with lyrics and chords. If you read a staff, you can go from a piano sketch to multi-staff scores for class and rehearsal. TOUCH NOTATION A notation keyboard replaces deep menus: tap notes and markings, or select on the staff to edit. Undo/redo for commutes, rehearsal gaps, or at the piano. On the free tier, inserting or editing measures shifts later bars automatically so the rest of the score stays aligned. WRITE AND HEAR IT Multi-staff playback; on long scores, playback follows your edit position. Composer Pro: per-staff Mute and Solo for full scores. WEB SCORE SHARING Generate a web score link—text or email to teachers, singers, or collaborators. Any browser shows standard notation and multi-part playback without installing the app. Print-friendly pages for handouts. PDF for archives and fixed layout; web links when your choir or band needs to hear the piece before rehearsal. Many mobile apps stop at PDF or screenshots; Notation shares playable web scores with the same playback and layout as on your device. EXPORT AND INTERCHANGE MusicXML, MIDI, PDF (screen preview + A4 print PDF). Import MusicXML without length limits—continue in MuseScore, Sibelius, etc. Free tier: starter export allowance. Composer Pro: unlimited export, clean PDF (see app for web-link limits). IPAD PRO WORKSPACE On iPad, library and score sit side by side for desktop-like sessions. iPhone: full notation and sharing when you are catching ideas on the go. YOU CAN ALSO: - Piano keyboard chord stacks; multi-verse lyrics with melismas and paste lyrics line by line; measure insert/copy/paste/delete - Ties, slurs, manual beams—free - Cloud sync (web links need sign-in + sync); Composer Pro: 8 staves, 2 voices per staff, transpose, meter changes NOTATION COVERAGE: * Notes/rests, dots, ties, slurs, beams (manual break/join) * Triplets; quintuplets–septuplets (Composer Pro) * Ornaments, articulations, dynamics, hairpins * Lyrics (verses), chords; title/composer/lyricist header * Clefs, time, tempo; major/minor keys; accidentals * Repeats, voltas, D.S./D.C.; pickups; measure-level edits * Templates: piano grand, treble/bass single staff, custom; long-score paging SUBSCRIPTION & LEGAL (COMPOSER PRO — OPTIONAL) Notation offers an optional paid membership called Composer Pro. You can subscribe in the app under Me → Upgrade. No subscription is required to create, edit, save, or play scores on the free tier. AUTO-RENEWABLE SUBSCRIPTION • Name: Composer Pro — Weekly Plan • Length: 1 week (renews every week) • Price: Shown on the in-app purchase screen before you confirm (localized price; may vary by country or region). If a free trial is available in your region, it is displayed on the subscription screen before purchase. Payment is charged to your Apple 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 will be charged for renewal within 24 hours prior to the end of the current period at the price of the selected plan. You can manage or cancel subscriptions in Settings → Apple ID → Subscriptions after purchase. Any unused portion of a free trial, if offered, is forfeited when you purchase a subscription. WHAT COMPOSER PRO INCLUDES • Advanced composing: full transposition and any key; up to 8 staves and 2 voices per staff; meter changes and special/additive meters; undo/redo; advanced repeat playback • Delivery & export: unlimited exports (MusicXML, and web score links); • Playback: full instrument library; per-staff mute and solo • Other: ad-free experience; community publishing; priority support Privacy Policy: https://solfegehub.com/UserManagerPrivacy_en.html Terms of Use (EULA): https://solfegehub.com/UserManagerTerms_en.html
Screenshots
Verdict
The clearest difference is in-app purchases: Speech Jammer at none against Notation's 2. Speech Jammer also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.6). Notation's advantage is update cadence (weekly vs every 7 months). On price 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. Notation sells 2 in-app purchases, starting at $2.99 per 7 days. Speech Jammer asks for nothing beyond the download.
Speech Jammer ships an update every 7 months, Notation weekly. The most recent releases landed on September 17, 2026 and September 10, 2026 respectively.
| Parameter | Speech Jammer | Notation |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 7 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 19 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Writecream | 凯 张 |
In-app purchases
Speech Jammer
No in-app purchases
Notation
- Weekly Subscription · NotationAI$2.997 Days
- Lifetime Access · NotationAI$19.99









