Comparison

Skyhigh Client vs TsubuTalk

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

Head to head
About

Skyhigh Client

Features
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Skyhigh Client is the mobile client app designed for Skyhigh Security Internet and Private Access traffic. This app is licensed software, which should be installed on your mobile devices. Contact Skyhigh Support before installing the software. The Skyhigh Client App allows you to establish a cloud-native connection to your public and private applications located in private and public cloud based on the policy enforcements defined, secured and granted on a least privileged basis. With Skyhigh Client App, the mobile and remote users can connect to these applications through the Skyhigh Security SSE Fabric. Disclaimer: VPNService is used for the Private Apps. It intercepts and resolves private domains and adds additional authentication information.

About

TsubuTalk

Features
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โ–  TsubuTalk โ€” AI Speaking Coach, on your iPhone. TsubuTalk turns the world's most capable AI chatbots (ChatGPT, Gemini, Claude) into your personal speaking coach. Record a short utterance ("tsubuyaki"), get instant 4-axis scoring on device, then hand the transcript off to your favorite AI with a built-in coaching prompt for in-depth feedback on logic, vocabulary, persuasiveness, or grammar. Your recordings and transcripts stay on your phone โ€” nothing is sent to external servers, ever. โ–  Why ChatGPT / Gemini / Claude as your coach? Whether it's English conversation, TOEFL / IELTS speaking, a presentation, or an interview, you can ask a top-tier AI to "review my logic," "improve my vocabulary," or "make this more persuasive" and get a structured critique in seconds. TsubuTalk never calls AI APIs directly. You pick a provider (ChatGPT / Gemini / Claude) and the app hands off your transcript via Share Sheet, clipboard, or browser โ€” you paste it into the official app or site yourself. No API key needed. - 5 built-in coaching prompts: logic / vocabulary / persuasiveness / grammar / custom - Switch the target provider in settings (ChatGPT default, Gemini beta, Claude beta) โ–  Instant on-device 4-axis scoring Before you hand off to the AI coach, see objective scores instantly on the device: - Volume (dBFS): average input level vs. a comfortable target range, as a 5-step badge. - Speech rate: mora/min (Japanese) or syllables/min (English), from the transcript. - Filler rate: detects fillers ("um", "uh" / "ใˆใƒผใจ", "ใ‚ใฎ") and their share of total tokens. - Pronunciation clarity: a 0-to-1 score from whisper.cpp's recognition confidence. When any axis falls outside its target range, a short text hint is shown. โ–  330 built-in topic prompts Beyond a "freestyle" mode, TsubuTalk ships with 330 prompts across 5 locales. - DAILY: 150 (30 x 5 locales) - SPEECH (structured / persuasive): 150 (30 x 5 locales) - ENGLISH (speaking drill): 30 (shared across locales) A random prompt is offered each time so you never run out of things to say. โ–  Progress dashboard Track scores over 7 / 30 / 90 days with line charts and a 4-axis radar. Streak counter, weekly/monthly counts, and rule-based insights at a glance. โ–  Mic calibration A 5-second calibration personalizes the target dBFS range to your device, so the volume score fits your setup. โ–  Privacy โ€” recordings never leave your device - Recordings, transcripts, scores, and calibration data stay on the device. - iCloud backup is excluded (NSURLIsExcludedFromBackupKey = true). Data migration is JSON export via Share Sheet (AirDrop / Files) only. - Crashes are not auto-reported; manual export only. - The only data leaving the device: AdMob ads, the first-time model download, and text you explicitly send to an external AI chat. See the in-app privacy policy for full details. โ–  Pricing โ€” completely free, ad-supported The app is completely free. A banner appears on the feedback screen and an interstitial during analysis (Google AdMob, personalized ads disabled). No ad-free plan, no in-app purchase, no subscription. โ–  Requirements - iOS 16 or later - ~600 MB free storage for the speech-recognition model - Wi-Fi recommended for the first launch (model download) โ–  Supported languages (5 locales) UI: Japanese / English / Simplified Chinese / Traditional Chinese / Korean Speech recognition: Japanese / English / Simplified Chinese / Traditional Chinese / Korean / Auto-detect (multilingual whisper model) โ–  Who is this for? - People practicing English conversation, TOEFL / IELTS speaking, presentations, or interviews - Anyone who wants AI feedback (ChatGPT / Gemini / Claude) on a speech but finds manual transcription tedious - Users who don't want their voice data sent to external servers โ€” privacy-first by design - Speakers who want to quantify their speaking with objective metrics (pace, fillers, volume) โ–  Contact Settings > About > Send Feedback, to email the developer directly.

Screenshots

Skyhigh Client3 screens
TsubuTalk4 screens

Verdict

The call

The clearest difference is ads: Skyhigh Client at none against TsubuTalk's shown. TsubuTalk's advantage is update cadence (fortnightly vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Skyhigh Client ships an update every 4 months, TsubuTalk fortnightly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard2 real differences ยท 4 level
Skyhigh Client versus TsubuTalk: the parameters behind the verdict, then further details
ParameterSkyhigh ClientTsubuTalk
PriceFreeFree
Update frequencyEvery 4 monthsFortnightly โ€” better
AdsNo โ€” betterYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.0 โ€” better16.0
Further details โ€” not scored
Size29 MB43 MB
Age rating17+4+
DeveloperSKYHIGH SECURITY LLCHARO WORKS

In-app purchases

None

Skyhigh Client

No in-app purchases

None

TsubuTalk

No in-app purchases

Questions

Is Skyhigh Client free?
Skyhigh Client is free to download, with no in-app purchases.
Is TsubuTalk free?
TsubuTalk is free to download, with no in-app purchases.
Do Skyhigh Client or TsubuTalk have ads?
TsubuTalk shows ads; Skyhigh Client does not.
Which is updated more often, Skyhigh Client or TsubuTalk?
Skyhigh Client ships an update every 4 months, and TsubuTalk fortnightly. Most recently, Skyhigh Client was updated on November 3, 2026 and TsubuTalk on November 5, 2026.

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