Comparison

Sphere vs Blank Apps

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

Head to head
About

Sphere

Features
Read full description

The multi-model advantage. Every AI model has different strengths. GPT-5 reasons sharply. Claude writes beautifully. Gemini knows the web. Why settle for one? Sphere runs your prompt across up to 4 AI models simultaneously and shows you all the answers in a swipeable carousel, so you can read, compare, and use the best one. MODELS INCLUDED โ€ข OpenAI GPT-5.5 & GPT-5.4 Mini โ€ข Anthropic Claude Opus 4.8, Sonnet 4.6 & Haiku 4.5 โ€ข Google Gemini 3.1 Pro & Gemini Flash 3.5 โ€ข xAI Grok 4 โ€ข DeepSeek R1 KEY FEATURES โ€ข Side-by-side comparison โ€” see up to 4 models answer your question at once โ€ข Real-time streaming โ€” answers appear as they're generated โ€ข Voice input โ€” dictate your prompts hands-free โ€ข Image & file attachments โ€” share screenshots, documents, and more โ€ข Thread history โ€” every conversation is saved and searchable SPHERE PRO Unlock all premium models, compare up to 4 at once, and get 500 prompts per month with unlimited threads. Subscriptions are billed through your Apple ID. Cancel anytime in Settings โ†’ Apple ID โ†’ Subscriptions. Privacy Policy: https://mnemosphere.ai/sphere/privacy-policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Blank Apps

Features
Read full description

Blank is a blank page with a genie living in it. Tap the black square and say what you need: โ€ข "A water tracker with a big + button" โ€ข "A groceries list my partner and I can both edit" โ€ข "A pomodoro timer that buzzes when time's up" Your app builds itself in front of your eyes โ€” and it's real. Your data saves. Your changes stick. Shake your phone whenever you want the genie back: "make the button green", "add a weekly chart", "undo that". Share any app with a link. Friends can use it instantly โ€” or remix it into their own. No templates. No app store inside the app store. Just you, describing what you want. Blank Pro โ€” optional subscription Blank Pro raises your daily limit to 500 generations a day, so you can keep building after the free daily allowance runs out. โ€ข Blank Pro Monthly โ€” auto-renewable subscription, billed monthly โ€ข Blank Pro Yearly โ€” auto-renewable subscription, billed yearly โ€ข A 3-day free trial is available on both plans Prices are shown in the app before you buy, in your local currency. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the period ends. You can manage or cancel your subscription in your Apple Account settings after purchase. Any unused portion of a free trial is forfeited when you buy a subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://blank.bodify.bod.ee/privacy

Screenshots

Sphere4 screens
Blank Apps4 screens

Verdict

The call

The clearest difference is in-app purchases: Blank Apps at none against Sphere's 2. Blank Apps also leads on update cadence (every 6 days vs every 3 weeks). On price, ads, 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. Sphere sells 2 in-app purchases, starting at $7.99 per month. Blank Apps asks for nothing beyond the download.

UpkeepUpdate frequency

Sphere ships an update every 3 weeks, Blank Apps every 6 days. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

Scorecard2 real differences ยท 4 level
Sphere versus Blank Apps: the parameters behind the verdict, then further details
ParameterSphereBlank Apps
PriceFreeFree
Update frequencyEvery 3 weeksEvery 6 days โ€” better
AdsNoNo
In-app purchasesYesNo โ€” better
DevicesiPhoneiPhone
Requires iOS16.416.0 โ€” better
Further details โ€” not scored
Size57 MB53 MB
Age rating17+12+
DeveloperRajesh CherukuriFEEDOX LLC

In-app purchases

2 purchases

Sphere

Subscriptions2
  • Premium Monthly$7.991 Month
  • Premium Yearly$54.991 Year
None

Blank Apps

No in-app purchases

Questions

Is Sphere free?
Sphere is free to download, with in-app purchases available.
Is Blank Apps free?
Blank Apps is free to download, with no in-app purchases.
Do Sphere or Blank Apps have ads?
Neither Sphere nor Blank Apps shows ads.
Which is updated more often, Sphere or Blank Apps?
Sphere ships an update every 3 weeks, and Blank Apps every 6 days. Most recently, Sphere was updated on September 30, 2026 and Blank Apps on October 3, 2026.

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