Comparison

Tree Height Meter vs Bionic Reading® Fonts

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

Head to head
About

Tree Height Meter

Estimate the height of trees, poles, and buildings using your phone's camera and trigonometry. Offers two measurement methods and can also calculate distance and area. Useful for professionals and curious individuals alike.

Highlights
  • Estimates tree, pole, and building heights
  • Two-point and eye-height measurement methods
  • Live elevation-angle readout
  • Distance and area calculation
  • Timber volume estimation
  • Exportable measurement history
Features
Read full description

How tall is that tree? Tree Height Meter turns your phone into a digital clinometer and estimates the height of any tree, utility pole, flagpole or building — no tape to the top, no special gear, just your phone and a little trigonometry. Stand back a known distance, sight the top and the base of your target, and the app combines the elevation angles with the distance to show an estimated height in metres or feet. TWO MEASURING METHODS • Two-point method — sight both the TOP and the BASE from one spot and enter the horizontal distance. Works even on sloping ground, because the base angle correctly adds its share. • Eye-height method — when the base sits level with your feet, sight only the TOP and add your own eye height. Faster, for flat ground. WHAT YOU GET • A live elevation-angle readout as you tilt the phone • Capture top and base with a tap • Zero-at-horizon calibration for a clean reading • Metres or feet, your choice • A Methods reference and a step-by-step Guide built in WHO IT'S FOR Foresters and arborists, surveyors and landscapers, tree-care crews, students learning trigonometry, and anyone curious how tall the tree in the yard really is. A NOTE ON ACCURACY The height is an estimate. Accuracy depends on a correct distance, a steady phone and a clear line of sight to the top and base — zero on a level horizon first. For estimation only; verify critical measurements with a calibrated instrument. MORE THAN TREES • Distance — sight the top of something whose height you know (a door, a pole, a building) and read how far away it is. • Area — enter the sides of a rectangle or a four-sided plot and get m², ft², acres or hectares. No tape? The pace helper turns your steps into metres. • Timber — estimate standing-tree volume from height and DBH, plus log yield in board feet by the Doyle, Scribner and International ¼-inch rules. Tree height carries over from your last saved measurement. HOW TO AIM Hold the phone upright, look across its top edge and tilt the back of the phone up toward the treetop. Looking up reads positive, looking down reads negative, and a light tap confirms each capture. Every height is saved to your history, where you can export a CSV or build a summary report.

About

Bionic Reading® Fonts

Read full description

Bionic Reading® Fonts is the upgrade for your eyes – as a real font, installed directly on your iPhone and iPad. The patented Bionic Reading® method visually emphasizes words, so your eyes find orientation faster. Once installed, use it in any app that offers its own font picker. ONE SUBSCRIPTION, ALL YOUR DEVICES. Your subscription is tied to your Apple ID, not to a single device. Once subscribed, install the Bionic Reading® Fonts on iPhone and iPad – at no extra cost. THREE PACKAGES. • Bionic Reading®: Sans Serif, Fixation 1–5, 10 styles • Bionic Reading® Serif: Serif, Fixation 1–5, 10 styles • Bionic Reading® Bundle: Both families, Fixation 1–5, 20 styles WHERE THE BIONIC READING® FONTS WORK. Once installed, your Bionic Reading® Fonts appear system-wide under Settings→ General→ Fonts→ My Fonts. You can use them in any app that offers its own font picker. On iPhone and iPad: • Apple Pages, Keynote, Numbers • GoodNotes • Procreate (on iPhone: Procreate Pocket) • and many more. Additionally on iPad: • Affinity Designer, Photo, Publisher • Final Cut Pro for iPad • and many more. Whether an app supports custom fonts is always up to that app. WHERE THE BIONIC READING® FONTS DON’T WORK. Apple doesn’t allow custom fonts everywhere. They definitely don’t work in: the system interface (Home Screen, Settings), Apple Notes, Messages/iMessage, Safari, Apple Books, or virtually all social media and messenger apps such as Instagram, TikTok, or WhatsApp – these apps always use their own, fixed fonts. Currently, they also don’t work in Microsoft Word, Excel, or PowerPoint, since these apps don’t support custom fonts – on iPhone and iPad alike. WHO IS THE APP FOR? For everyone who reads and writes a lot – on iPhone as well as iPad. For school, university, work, and creative projects in apps like Pages, GoodNotes, or Procreate. Many people with ADHD, dyslexia, or other reading difficulties report that Bionic Reading® helps them grasp and understand content faster. Bionic Reading® is not a medical product and does not replace diagnosis or therapy. But for many people, it can be a real “Game Changer” in everyday life. MORE POSSIBILITIES ON MAC. On the Mac, Bionic Reading® opens up even more possibilities – as a classic desktop font, usable in virtually any program. The Bionic Reading® Fonts for Mac are a separate product, available directly at bionic-reading.com. ALSO FOR CHAT AND SOCIAL MEDIA APPS. If you’d like to use Bionic Reading® in chat and social media apps specifically, we recommend our app “Bionic Reading® Font Keyboard” (available separately on the App Store) – it works on a different principle and writes Bionic Reading® directly in virtually any typing app. A FAIR SUBSCRIPTION FOR ALL FEATURES. With your subscription, you get full access to install the Bionic Reading® Fonts included in your chosen package. Subscriptions are billed monthly or annually at the selected rate. You’re supporting not just an app, but the idea of making reading easier, more beautiful, and more accessible. Terms of Use: https://bionic-reading.com/bionic-reading-font-software-license-agreement/ TYPOGRAPHY. DESIGN. SWITZERLAND. Bionic Reading® comes from Switzerland. With over 30 years of typography experience, we know that small details make a big difference: how a word looks, where the eye stops, and how quickly text is understood. That is exactly why Bionic Reading® was developed. INTERNATIONAL AWARDS FOR BIONIC READING®. Bionic Reading® is a patented method and has received international awards. • German Innovation Award 2023: Gold (highest distinction) • German Design Award 2023: Gold (highest distinction) The one and only from Switzerland is a “Life Changer” for Lisa, a “Game Changer” for Tommy and “Absolutely Mind Blowing” for Kelly.

Screenshots

Tree Height Meter3 screens
Bionic Reading® Fonts4 screens

Verdict

The call

The clearest difference is in-app purchases: Tree Height Meter at none against Bionic Reading® Fonts's 6. Tree Height Meter also leads on update cadence (every 3 days vs every 6 days). Bionic Reading® Fonts's advantage is ads (none vs shown). On price, device support and iOS requirement 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. Bionic Reading® Fonts sells 6 in-app purchases, starting at $4.90 per month. Tree Height Meter asks for nothing beyond the download.

UpkeepUpdate frequency

Tree Height Meter ships an update every 3 days, Bionic Reading® Fonts every 6 days. The most recent releases landed on September 26, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 6 level
Tree Height Meter versus Bionic Reading® Fonts: the parameters behind the verdict, then further details
ParameterTree Height MeterBionic Reading® Fonts
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 days — betterEvery 6 days
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.4 — better17.0
Further details — not scored
Size49 MB13 MB
Age rating17+4+
Developerheekyung moonBionic Reading AG

In-app purchases

None

Tree Height Meter

No in-app purchases

6 purchases

Bionic Reading® Fonts

Subscriptions6
  • Bionic Reading®$4.901 Month
  • Bionic Reading® Serif$4.901 Month
  • Bionic Reading® Bundle$7.901 Month
Show 3 more
  • Bionic Reading®$49.001 Year
  • Bionic Reading® Serif$49.001 Year
  • Bionic Reading® Bundle$79.001 Year

Questions

Is Tree Height Meter free?
Tree Height Meter is free to download, with no in-app purchases.
Is Bionic Reading® Fonts free?
Bionic Reading® Fonts is free to download, with in-app purchases available.
Do Tree Height Meter or Bionic Reading® Fonts have ads?
Tree Height Meter shows ads; Bionic Reading® Fonts does not.
Which is updated more often, Tree Height Meter or Bionic Reading® Fonts?
Tree Height Meter ships an update every 3 days, and Bionic Reading® Fonts every 6 days. Most recently, Tree Height Meter was updated on September 26, 2026 and Bionic Reading® Fonts on October 6, 2026.

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