Comparison

Torricelli vs VTrans

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

Head to head
About

Torricelli

Features
Read full description

Torricelli's Theorem Calculator Based on Torricelli's Law, also known as Torricelli's Theorem, this calculator is a tool in fluid dynamics that relates the speed of fluid flowing out of an opening to the height of the fluid above the opening. Features: • Input parameters such as Tank Height, Tank Radius, Spigot Height, and Spigot Radius. • Simulate water flowing out from the tank in 3D. • Simulate the volume of water remaining over time. • Simulate water pressure over time. • Simulate water speed at the spigot over time. • Simulate water distance over time. • Simulate the farthest water height remaining over time. • Simulate the time needed for the water to flow out until reaching the spigot height. • Works seamlessly on both iPhone and iPad. • Lightweight, compact app optimized for everyday use. • Ad-free and built with privacy in mind. Torricelli's Theorem states that if a tank contains liquid and is open to the atmosphere at its top, and there is an orifice in the tank at a height h below the top of the liquid, then the speed of outflow from the orifice is √2gh, provided the liquid obeys Bernoulli's equation and the top of the liquid can be regarded as motionless. Torricelli's Theorem Formula: v = √2 * g * h where: v : Fluid Speed at the Orifice, in meters per second (m/s) h : Height of the Orifice from the Top, in meters (m) g : The acceleration due to gravity, 9.80665 m/s² Thanks for your support, and do visit nitrio.com for more apps for your iOS devices.

About

VTrans

This app transforms Bluetooth earphones and sticks into a real-time translation device. It supports over 100 languages for various scenarios like travel, business, and study abroad, offering both touch and automatic recognition modes.

Highlights
  • Bluetooth earphone translation
  • Real-time voice translation
  • Over 100 languages supported
  • Speech recognition and synthesis
  • Touch and automatic recognition modes
  • AI-powered translation
Read full description

The VTrans app can turn your Bluetooth earphones and Bluetooth sticks into a translation machine with just one click, which can be used for real-time translation of overseas travel voice, overseas shopping conversations, overseas online voice friendship, study abroad life conversations, overseas work communication, cross-border business cooperation, diplomatic conversations, and more scenarios. AI translation We support multi-mode translation such as headphone touch and automatic recognition. Touch mode, can click or double-click on the headphones to speak, real-time translation; Free speaking mode, capable of automatic language recognition and real-time translation. Multilingual: We provide speech recognition, text translation, and speech synthesis services in over 100 languages, covering the majority of the global population.

Screenshots

Torricelli4 screens
VTrans4 screens

Verdict

The call

The clearest difference is price: VTrans at Free against Torricelli's $2.99. VTrans also leads on update cadence (every 5 weeks vs every 28 months). Torricelli's advantage is in-app purchases (none vs 19) and iOS requirement (13 vs 15.0). On 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

VTrans is free to download; Torricelli costs $2.99 up front. VTrans sells 19 one-off in-app purchases. Torricelli asks for nothing beyond the download.

UpkeepUpdate frequency

Torricelli ships an update every 28 months, VTrans every 5 weeks. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

Scorecard4 real differences · 6 level
Torricelli versus VTrans: the parameters behind the verdict, then further details
ParameterTorricelliVTrans
Price$2.99Free — better
Rating—2.2 (37 ratings) — better
Positive reviews—8.3% of reviews
Number of ratings—37 — better
Update frequencyEvery 28 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13 — better15.0
Further details — not scored
Size1 MB196 MB
Age rating4+4+
DeveloperHeng Jia LiangShenzhen Beibo Intelligent Technology Co., Ltd.

Bugs and requests

Torricelli

Not enough reviews yet to summarise bugs or requests.

VTrans

Reported bugs

27 issues
  • Translation stops after 50 seconds
  • Pauses during use
  • Doesn't support continuous translation
  • Voice detection and translation results are poor
  • Slow Japanese speaking speed
Show 22 more
  • Translation stops with 'correct usage' dialog
  • Cannot translate back and forth between two languages
  • Talks over user
  • Gets translation wrong 60% of the time
  • Cannot register for app membership
  • Unsupported languages listed
  • Offline translation not downloadable
  • Low volume in speaker mode
  • Cannot connect to app
  • App rejects passwords
  • Cannot translate two languages simultaneously
  • Device not authorized error
  • Translation takes too long
  • Paid translations not included
  • AI doesn't connect
  • No Tagalog support
  • Instructions unclear
  • App not working correctly
  • Disconnects frequently
  • Paid membership doesn't provide promised features
  • Subscription not visible in Apple subscriptions
  • Translation delayed by over 40 seconds

Requested features

6 requests
  • Allow continuous translation
  • Adjustable speaking speed
  • Background translation mode
  • Add Persian to conversation mode
  • Improve translation accuracy
Show 1 more
  • Add more languages (Vietnamese, Nepali, Tagalog)

In-app purchases

None

Torricelli

No in-app purchases

19 purchases

VTrans

One-time19
  • 视频通话时长1分钟$0.99
  • Offline package 7 days$0.99
  • 蓝牙棒(7天)$0.99
Show 16 more
  • 蓝牙耳机(7天)$0.99
  • AI transfer for 120 minutes$3.99
  • Offline package 1 year$5.99
  • Video call duration 1 hour$6.99
  • Offline translation for 2years$7.99
  • Translation Stick (1 years)$11.99
  • AI member for 1 month$12.90
  • AI transfer for 600 minutes$12.99
  • Translation Stick (2 years)$19.99
  • Bluetooth earphones (1 years)$19.99
  • Bluetooth earphones (2 years)$29.99
  • Video call duration 1 month$49.99
  • AI membership for 6 months$58.90
  • Video call duration 10 hours$59.99
  • AI member for 1 year$98.90
  • AI membership permanent$169.00

Questions

Is Torricelli free?
Torricelli costs $2.99, with no in-app purchases.
Is VTrans free?
VTrans is free to download, with in-app purchases available.
Do Torricelli or VTrans have ads?
Neither Torricelli nor VTrans shows ads.
Which is updated more often, Torricelli or VTrans?
Torricelli ships an update every 28 months, and VTrans every 5 weeks. Most recently, Torricelli was updated on October 1, 2026 and VTrans on October 13, 2026.

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