Comparison

One vs NebulaBuds

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

Head to head
About

One

Effortlessly convert spoken words into text and translate them into over 100 languages. This app simplifies communication by offering voice input, text translation, and speech synthesis, making it convenient and labor-saving.

Highlights
  • Voice-to-text conversion
  • Multilingual translation
  • Speech synthesis
  • Supports over 100 languages
  • Effortless voice input
Read full description

Convenient and effortless: Touch the area where you want to enter text, press the button, and then say what you want to say, we will automatically convert it into text for you, no need to manually enter it, which is convenient and labor-saving. Barrier-free communication: In addition to voice input, we also provide translation services that can be converted into any language you set. Multilingual support: We provide speech recognition, text translation and speech synthesis services in more than 100 languages, covering most people in the world.

About

NebulaBuds

This app offers real-time translation for over 130 languages, supporting audio, video calls, and even text from photos. It features AI-powered voice assistance, meeting summarization, and a unique dual-ear mode for seamless conversations.

Highlights
  • Real-time translation for 133 languages
  • Photo and text translation with layout preservation
  • Audio and video call interpretation
  • AI voice wake-up for information
  • Dual ear mode for simultaneous conversation
  • AI meeting notes and summarization
  • AI smart chat for advice
Features
Read full description

Nebula Buds AI Interpretation APP: Translate up to 133 languages -​​Photo Translation​​: Signs, menus, product labels—translate instantly with a snap, with ​​1:1 font and layout preservation. -DeepSeek R1: The latest AI large model, real-time connectivity, deep thinking, with visible process. - AI Voice Wake-up: Say "Hey Nebula" to check real-time information like weather and news, - Audio and Video Call Translation: Translate conversations during video calls. The other party doesn’t need to download the app. - Dual Ear Mode: Share one earbud each, speak simultaneously, and interrupt freely, breaking free from turn-based conversations. - Meeting Notes: Identify speakers and quickly summarize meeting content. - AI Smart Chat: Realistic voice responses, answer anytime, and offer advice for your life and work. - Simultaneous Interpretation: Real-time translation of 133 languages, your personal interpreter in your ear.

Screenshots

One2 screens
NebulaBuds4 screens

Verdict

The call

The clearest difference is rating: NebulaBuds at 4.4 against One's 2.3. NebulaBuds also leads on ratings volume (16K vs 188) and update cadence (every 2 weeks vs monthly). On price, ads, in-app purchases and monetization model 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. One sells 10 one-off in-app purchases and NebulaBuds sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

NebulaBuds holds the better App Store score, 4.4 against 2.3. That said, the two scores are not equally well evidenced: NebulaBuds has 16K ratings behind it against 188, so its average is the more settled of the two. Written reviews point the same way: 14% of One's written reviews are positive against 25% of NebulaBuds's.

UpkeepUpdate frequency

One ships an update monthly, NebulaBuds every 2 weeks. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard4 real differences · 6 level
One versus NebulaBuds: the parameters behind the verdict, then further details
ParameterOneNebulaBuds
PriceFreeFree
Rating2.3 (188 ratings)4.4 (16K ratings) — better
Positive reviews13.7% of reviews25.3% of reviews — better
Number of ratings18816K — better
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.514.0 — better
Further details — not scored
Size218 MB168 MB
Age rating4+17+
DeveloperHangzhou zhidou Technology Co., Ltd.Shanghai PalmZen Wireless Technology Co.,Ltd

Customer experience

One

All ratings186 ratings
Positive29.6%
Neutral7.5%
Negative62.9%
Written reviews95 reviews
Positive13.7%
Neutral6.3%
Negative80.0%

NebulaBuds

All ratings15,684 ratings
Positive85.5%
Neutral3.7%
Negative10.9%
Written reviews430 reviews
Positive25.3%
Neutral6.3%
Negative68.4%

User reviews

One

From 188 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 One-click translation
  • 💡 Useful for conversations

Room to improve

  • 🐛 Connection issues
  • 🐛 Unreliable translations
  • 🔋 Drains battery quickly
  • 🔒 Authorization problems

NebulaBuds

From 16K App Store ratings

What we love

  • 👍 Good translation accuracy
  • 🚀 Impressive AI features
  • 💡 Versatile functionality

Room to improve

  • 🐛 Connectivity issues
  • 🔋 Poor battery life
  • 👎 Unreliable app performance
  • 💸 Expensive subscription
  • 🤔 Confusing instructions

Bugs and requests

One

Reported bugs

3 issues
  • Device not authorized
  • App crashes after updates
  • Bluetooth connectivity problems

Requested features

3 requests
  • More language options
  • Customizable voice options
  • Improved conversation mode

NebulaBuds

Reported bugs

3 issues
  • App crashes or freezes
  • Earbuds fail to connect
  • Translation feature not working as advertised

Requested features

3 requests
  • Add more language support
  • Improve live translation capabilities
  • Streamline app setup and connectivity

In-app purchases

10 purchases

One

One-time10
  • Bluetooth stick (1 year)$4.99
  • Offline package 1 year$6.99
  • Bluetooth stick (2 years)$9.99
Show 7 more
  • Offline package 2 year$9.99
  • Call translation (60 minutes)$9.99
  • Basic Services (1 year)$24.99
  • Basic Services (2 years)$39.99
  • Video call duration 10 hours$49.99
  • Call translation (600 minutes)$69.99
  • Video call duration 1 month$79.99
10 purchases

NebulaBuds

One-time10
  • 300-minute recording package$14.99
  • 3个月vip$14.99
  • 3 Month VIP$19.99
Show 7 more
  • 3-Month VIP$24.99
  • 720-minute recording package$29.99
  • 1年vip$29.99
  • 1 Year VIP$39.99
  • 1-Year VIP$59.99
  • 1800-minute recording package$59.99
  • 1800-minutes recording package$59.99

Questions

Is One free?
One is free to download, with in-app purchases available.
Is NebulaBuds free?
NebulaBuds is free to download, with in-app purchases available.
Which has better reviews, One or NebulaBuds?
NebulaBuds is rated higher. One averages 2.3 out of 5 from 188 ratings, while NebulaBuds averages 4.4 from 16K ratings.
Do One or NebulaBuds have ads?
Neither One nor NebulaBuds shows ads.
Which is updated more often, One or NebulaBuds?
One ships an update monthly, and NebulaBuds every 2 weeks. Most recently, One was updated on November 3, 2026 and NebulaBuds on November 5, 2026.

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