Comparison

Opalite vs Slime

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

Head to head
About

Opalite

This AI-powered tool provides real-time speech-to-speech translation for over 150 languages, aiming to eliminate language barriers in healthcare settings. It offers instant, 24/7 access and integrates with major EHR systems for seamless clinical documentation.

Highlights
  • Real-time speech-to-speech translation
  • Supports over 150 languages
  • HIPAA compliant and SOC 2 Type II certified
  • Integrates with major EHRs
  • Works on any device
  • 24/7 instant access
Features
Read full description

Break Down Language Barriers in Healthcare Opalite was built by founders who lived this problem. As children of immigrant parents who don't speak English, we watched our families struggle to communicate with doctors. As physicians, we saw firsthand how patients suffer when critical information gets lost in translation.  So we built something better. Opalite is an AI medical interpreter that delivers real-time, speech-to-speech translation in over 150 languages. In validation studies with physician-researchers from Johns Hopkins and Stanford, Opalite showed 90% fewer errors than certified human interpreters. Instant access 24/7. No waiting for an interpreter. HIPAA compliant and SOC 2 Type II certified. Integrates directly with Epic and other major EHRs with automated clinical documentation. Works on any device you already have. From emergency rooms to community clinics, Opalite helps providers deliver better care to every patient, no matter what language they speak.

About

Slime

Capture your thoughts using voice and have them organized and acted upon. This AI partner remembers your ideas, tasks, and commitments, providing daily briefings and integrating with your existing tools.

Highlights
  • Voice note capture
  • AI-powered organization
  • Task and commitment tracking
  • Daily briefings
  • Calendar and reminder integration
  • Works with Gmail and Docs
Features
Read full description

Speak your thoughts. Slime organizes and acts. Most AI apps start with a text box. Slime starts with your voice. Tap, speak — your thoughts are captured, remembered, and turned into something useful. --- Try saying: “Remind me to follow up this week” “Quick thought — retention matters more than growth” “What did I say about the Tokyo trip?” “Plan my day” It remembers what matters --- Slime keeps track of what you’ve said, what you care about, and what you’re working on. You can come back to something weeks later — it’s still there. Turns thoughts into action Ideas, tasks, and commitments don’t get lost. Say it once — Slime keeps track. --- Start your day with context Slime reviews your calendar, reminders, and recent activity, then gives you a simple daily briefing. --- Works with your tools Calendar, Reminders, Contacts, Gmail, Docs — all in one place. --- Pricing Free plan available. Paid plans unlock more usage and integrations. Slime is for people who think out loud and don’t want to lose it.

Screenshots

Opalite4 screens
Slime4 screens

Verdict

The call

The clearest difference is in-app purchases: Opalite at none against Slime's 3. Opalite also leads on update cadence (every 5 days vs every 11 days) and ratings volume (6 vs 1). On price, rating, ads 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. Slime sells 3 in-app purchases, starting at $9.99 per month. Opalite asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Opalite against 5.0 for Slime. That said, the two scores are not equally well evidenced: Opalite has 6 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Opalite ships an update every 5 days, Slime every 11 days. The most recent releases landed on September 26, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 6 level
Opalite versus Slime: the parameters behind the verdict, then further details
ParameterOpaliteSlime
PriceFreeFree
Rating5.0 (6 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings6 — better1
Update frequencyEvery 5 days — betterEvery 11 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size58 MB15 MB
Age rating4+4+
DeveloperCalliope AI Inc.Tai-Er MA

Customer experience

Opalite

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Slime

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Opalite

No in-app purchases

3 purchases

Slime

Subscriptions3
  • Minion$9.991 Month
  • Knight$24.991 Month
  • Oracle$99.991 Month

Questions

Is Opalite free?
Opalite is free to download, with no in-app purchases.
Is Slime free?
Slime is free to download, with in-app purchases available.
Which has better reviews, Opalite or Slime?
Opalite and Slime are both rated 5.0 out of 5 on the App Store, from 6 and 1 ratings respectively.
Do Opalite or Slime have ads?
Neither Opalite nor Slime shows ads.
Which is updated more often, Opalite or Slime?
Opalite ships an update every 5 days, and Slime every 11 days. Most recently, Opalite was updated on September 26, 2026 and Slime on October 1, 2026.

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