Comparison

HexCalculator vs Einky

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

Head to head

HexCalculator

Precision in Every Calculation

About

HexCalculator

Features

Read full description

Discover the ultimate calculator experience with HexCalculator. Whether you're a programmer, engineer, or student, this app is your gateway to precise and efficient calculations in hexadecimal, binary, and decimal formats. Download HexCalculator now and elevate your mathematical prowess to new heights!

About

Einky

Features

Read full description

A photo editing and screen projection tool specially designed for e-ink pendants, seamlessly connecting your phone with the e-ink pendant. No complex operations are required. With just one click, upload pictures from your phone's album and quickly project them onto the e-ink pendant. Easily turn family photos, celebrity idols, landscape photos, and inspiring words into portable and exclusive display items. It is equipped with practical photo editing tools that are compatible with the display characteristics of e-ink screens. With just a few simple steps, you can optimize your pictures: crop the size to fit the pendant, adjust the contrast to make the display clearer, and add text annotations. With simple operations, unlock the infinite possibilities of e-ink pendants and keep your creativity visible at all times. Come and download to experience it now

Screenshots

HexCalculator4 screens

Einky4 screens

Verdict

The call

The clearest difference is in-app purchases: Einky at none against HexCalculator's 2. Einky also leads on update cadence (every 11 days vs every 2 months). On price, ads, 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. HexCalculator sells 2 one-off in-app purchases. Einky asks for nothing beyond the download.

UpkeepUpdate frequency

HexCalculator ships an update every 2 months, Einky every 11 days. The most recent releases landed on October 1, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 4 level

HexCalculator versus Einky: the parameters behind the verdict, then further details
Parameter	HexCalculator	Einky
Price	Free	Free
Update frequency	Every 2 months	Every 11 days — better
Ads	No	No
In-app purchases	Yes	No — better
Devices	iPhone, iPad	iPhone, iPod
Requires iOS	16.0	15.6 — better
Further details — not scored
Size	16 MB	44 MB
Age rating	4+	4+
Developer	Marc Gomez Asensio	升寅梁

In-app purchases

2 purchases

HexCalculator

One-time2

Royalty FeaturesFree
Unlock All Features$0.99

None

Einky

No in-app purchases

Questions

Is HexCalculator free?

HexCalculator is free to download, with in-app purchases available.

Is Einky free?

Einky is free to download, with no in-app purchases.

Do HexCalculator or Einky have ads?

Neither HexCalculator nor Einky shows ads.

Which is updated more often, HexCalculator or Einky?

HexCalculator ships an update every 2 months, and Einky every 11 days. Most recently, HexCalculator was updated on October 1, 2026 and Einky on October 12, 2026.