Comparison

Upside Down Text vs Vibration Meter, seismograph

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

Head to head
About

Upside Down Text

Easily generate text with an upside-down effect for sharing on social media, messages, or emails. Transform your regular text into a unique, flipped format to stand out in your communications.

Highlights
  • Create upside-down text effects
  • Share to social networks
  • Share via email
  • Share via messages
  • Text transformation
Features
Read full description

Flip any text upside down and paste it anywhere: ¡ǝɹǝɥʍʎuɐ ʇı ǝʇsɐd Type or paste, tap Copy, done. Messages, bios, captions, comments and usernames all take it, because flipped text is made of real Unicode characters, not a picture. SIX STYLES • Upside Down: ʇxǝʇ uʍop ǝpısdn • Backwards: sdrawkcab • Small Caps, for a quiet, stylish look • Bubble: ⓑⓤⓑⓑⓛⓔ • Wide: wide • Strike, for crossed-out text FLIP FROM ANYWHERE • Share menu: select text in any app, tap Share, then Flip Upside Down, and copy without leaving that app • Home Screen and Lock Screen widgets that show your own words flipped • A Control Center control that opens straight to the editor • Siri and Shortcuts: "Flip text with Upside Down", or put it on the Action button READ IT BACK Someone sent you flipped text? Paste it in: flipping twice turns it the right way up. MADE FOR iOS 26 A clean glass design in light and dark, built for iPhone and iPad. Your text never leaves your device. No account, no sign up. The app is free with ads; one purchase removes them for good.

About

Vibration Meter, seismograph

This application uses your phone's accelerometer to measure and record vibrations from various sources, including earthquakes and everyday objects. It displays ground motion on a graph and uses an instrumental intensity scale for analysis. You can also monitor and share your measurement results.

Highlights
  • Measures vibration strength
  • Detects seismic waves
  • Uses accelerometer for analysis
  • Displays ground motion graph
  • Utilizes instrumental intensity scale
  • Monitors and shares results
Features
Read full description

Vibration meter is an app called seismograph or seismometer, which measures the strength of vibration, quakes, earthquakes, vibrations of the human body or any other objects around you. Our app allows for detecting and recording of seismic waves generated by earthquakes, volcanic eruptions, avalanches and other sources of vibration and shocks. Accelerometer in your mobile phone is used for detection of vibrations and measurement analysis. Graph presents a record of the ground motion at a measuring point. Ground movement or an object is presented as a function of time in the three Cartesian axes, with the z axis perpendicular to the Earth's surface and the x- and y- axes parallel to the surface. Mercalli intensity scale is a seismic scale used for measuring the intensity of an earthquake. It measures the effects of an earthquake and it is distinct from the moment of magnitude. Richter Scale assigns a magnitude number to quantify the energy released by an earthquake. Peak Ground Acceleration (PGA) is equal to the maximum ground acceleration that occurred during earthquake shaking at location. PGA is equal to the amplitude of the largest absolute acceleration recorded on an accelerogram at a site during a particular earthquake. In this app we use Instrumental Intensity Scale (developed by The United States Geological Survey) which maps peak ground acceleration and peak ground velocity on an intensity scale similar to the felt Mercalli Scale. These values are used to create shake maps by seismologists on around the world. Mercalli Intensity Scale distinguishes the following levels of vibration and impact damage: I. Instrumental - Not felt. Recorded by seismographs. II. Weak - Felt only on top floors of high buildings. III. Slight - Felt indoors, like a passing light truck. IV. Moderate - Windows, doors rattle. Like passing train. V. Rather Strong - Felt by all. Small objects upset. VI. Strong - Books off shelves. Trees shake. Damage. VII. Very Strong - Difficult to stand. Buildings damaged. VIII. Destructive - Significant damage. Trees broken. IX. Violent - General panic. Serious damage. Cracks. X. Intense - Most buildings destroyed. Rails bent. XI. Extreme - Rails bent greatly. Pipelines destroyed. XII. Catastrophic - Near total damage. This app allows you monitor and share the results of your measurements with other users. Measure and monitor all vibration and shocks using smartphone or tablet!

Screenshots

Upside Down Text4 screens
Vibration Meter, seismograph4 screens

Verdict

The call

The clearest difference is review sentiment: Upside Down Text at 100% against Vibration Meter, seismograph's 42%. Upside Down Text also leads on monetization model (free vs free with in-app purchases). Vibration Meter, seismograph's advantage is rating (4.7 vs 4.0) and ads (none vs shown). On price, in-app purchases 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. Upside Down Text sells 1 one-off in-app purchase and Vibration Meter, seismograph sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Vibration Meter, seismograph holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Vibration Meter, seismograph has 733 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 100% of Upside Down Text's written reviews are positive against 42% of Vibration Meter, seismograph's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Upside Down Text ships an update every 77 months, Vibration Meter, seismograph every 7 months. The most recent releases landed on November 1, 2026 and November 11, 2026 respectively.

Scorecard7 real differences · 3 level
Upside Down Text versus Vibration Meter, seismograph: the parameters behind the verdict, then further details
ParameterUpside Down TextVibration Meter, seismograph
PriceFreeFree
Rating4.0 (4 ratings)4.7 (733 ratings) — better
Positive reviews100.0% of reviews — better42.5% of reviews
Number of ratings4733 — better
Update frequencyEvery 77 monthsEvery 7 months — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.012.0 — better
Further details — not scored
Size5 MB18 MB
Age rating4+4+
Developervuong cuongExaMobile S.A.

Customer experience

Upside Down Text

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Vibration Meter, seismograph

All ratings730 ratings
Positive92.2%
Neutral3.8%
Negative4.0%
Written reviews73 reviews
Positive42.5%
Neutral5.5%
Negative52.1%

In-app purchases

1 purchases

Upside Down Text

One-time1
  • Remove Ads$1.99
1 purchases

Vibration Meter, seismograph

One-time1
  • Remove ads$1.99

Questions

Is Upside Down Text free?
Upside Down Text is free to download, with in-app purchases available.
Is Vibration Meter, seismograph free?
Vibration Meter, seismograph is free to download, with in-app purchases available.
Which has better reviews, Upside Down Text or Vibration Meter, seismograph?
Vibration Meter, seismograph is rated higher. Upside Down Text averages 4.0 out of 5 from 4 ratings, while Vibration Meter, seismograph averages 4.7 from 733 ratings.
Do Upside Down Text or Vibration Meter, seismograph have ads?
Upside Down Text shows ads; Vibration Meter, seismograph does not.
Which is updated more often, Upside Down Text or Vibration Meter, seismograph?
Upside Down Text ships an update every 77 months, and Vibration Meter, seismograph every 7 months. Most recently, Upside Down Text was updated on November 1, 2026 and Vibration Meter, seismograph on November 11, 2026.

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