Comparison

こえもじ vs Sign Motion

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

Head to head
About

こえもじ

Features
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こえもじは、話し声をリアルタイムで文字に変換し、画面に大きく表示する聴覚支援アプリです。 聴覚障害や難聴のある方はもちろん、会議・授業・診察・窓口対応など、聞き取りにくい場面で音声を目で確認できます。 声を「見える文字」に変えることで、会話の理解とコミュニケーションをサポートします。 <主な機能> リアルタイム音声認識 マイクに向かって話すだけで、話し声をすばやく文字化します。会話の内容をその場で確認できます。 大きく見やすい文字表示 認識した言葉を画面に大きく表示。聞き取りにくい場面でも、内容を視覚的に把握できます。 見やすさを調整できる表示設定 文字サイズ、フォント、背景色を変更できます。利用シーンや見え方に合わせて、自分に合った表示に調整できます。 わかりやすいステータス表示 録音中・待機中などの状態をマイクボタンの色で表示。今アプリが音声を聞き取っているか、ひと目で確認できます。 対応環境でのApple Intelligence活用 対応しているOS・端末では、認識結果の整形や要約を活用できます。長い説明や会話の内容も、より確認しやすくなります。 マルチデバイス対応 iPhone、iPad、Macなど、対応デバイスで利用できます。日常会話から外出先、学習、仕事まで幅広い場面で使えます。 <活用シーン> ・病院や薬局での説明確認に ・学校、講義、研修での聞き取り補助に ・会議、講演、オンラインミーティングでの内容確認に ・窓口対応や接客時のコミュニケーション補助に ・高齢の方や聞こえにくさを感じる方との会話に ・騒がしい場所で音声が聞き取りにくいときに こえもじは、誰もが音声情報にアクセスしやすい社会を目指して開発されました。 声が届きにくい場面でも、文字なら伝わる。 こえもじは、聞こえにくい会話を見える文字に変え、安心して内容を確認できるようサポートします。

About

Sign Motion

Features
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Sign Motion displays your face, upper body and fingers as a 2D avatar with clear expressions on a gray background. • Choose a cat, tiger, rabbit, chimpanzee, dog or either of two portrait avatars above Record • See blinks, winks, gaze, eyebrows, cheeks and mouth movements on the avatar face • See shaded hands and arms, clear finger boundaries and a white T-shirt • Start in Skeleton only, or choose Camera + Skeleton in Settings • Record the rendered avatar as an MP4, then save to Photos or share • Import a video you select from Photos, add multiple captions and trim it • Set each caption's start and end times, text color, size and position Caption times refer to the original video. Trimming retains only overlapping caption intervals. Editing exports a copy and preserves the original video and its audio. Imported videos keep their original footage; the app does not turn them into avatars. Tracking runs on your iPhone or iPad without an account. Camera images and tracking results are not sent to a server. Avatar recordings contain no camera footage. Microphone recording is off by default; enable it in Settings to include audio. Permissions are requested when needed. Saved videos remain in the app until you delete them; exported copies must be deleted separately. Choose 30 fps or 60 fps camera capture. Face, upper-body and hand positions in the image and facial expressions are estimated on your device. Avatar recordings use 720 × 1280 and a 60 fps setting; capture, tracking and display run at separate rates, and videos may reuse the previous pose. Use good lighting and keep your face, shoulders and both hands visible. Fast movement, occlusion and low light can reduce accuracy. Facial movements are estimates, not emotion recognition. The app visualizes movement. It does not classify or translate sign language or perform medical measurements. Requires iOS or iPadOS 18 or later.

Screenshots

こえもじ4 screens
Sign Motion4 screens

Verdict

The call

The clearest difference is in-app purchases: Sign Motion at none against こえもじ's 1. Sign Motion also leads on ads (none vs shown) and update cadence (daily vs fortnightly). こえもじ's advantage is iOS requirement (15.6 vs 18.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. こえもじ sells 1 one-off in-app purchase. Sign Motion asks for nothing beyond the download.

UpkeepUpdate frequency

こえもじ ships an update fortnightly, Sign Motion daily. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 2 level
こえもじ versus Sign Motion: the parameters behind the verdict, then further details
ParameterこえもじSign Motion
PriceFreeFree
Update frequencyFortnightlyDaily — better
AdsYesNo — better
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size9 MB38 MB
Age rating4+4+
DeveloperKeisuke NakashimaFumikazu Kondo

In-app purchases

1 purchases

こえもじ

One-time1
  • 広告非表示プラン$1.99
None

Sign Motion

No in-app purchases

Questions

Is こえもじ free?
こえもじ is free to download, with in-app purchases available.
Is Sign Motion free?
Sign Motion is free to download, with no in-app purchases.
Do こえもじ or Sign Motion have ads?
こえもじ shows ads; Sign Motion does not.
Which is updated more often, こえもじ or Sign Motion?
こえもじ ships an update fortnightly, and Sign Motion daily. Most recently, こえもじ was updated on October 30, 2026 and Sign Motion on October 31, 2026.

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