Comparison

HAY HILL vs Dull Grading

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

Head to head
About

HAY HILL

Features
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Reserve meeting rooms, book into member events, and manage your account through the 12 Hay Hill app. You can also use the app to engage with fellow members as well as get to know what’s going on at 12 hay Hill. Please note, this app is for 12 Hay Hill members only.

About

Dull Grading

Features
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"""Dull Grading App"" by Zerda Lab Ltd. revolutionizes the PDC drill bit dull grading process. Boasting a user-friendly interface, the app simplifies the otherwise complex task of grading and extracting useful insights from data collected. Dull Grading App excels in data collection, ensuring completeness and accuracy. The application is capable of capturing a wide range of parameters with precision, transforming the way you grade your drill bits. It ensures that no crucial detail goes unnoticed, thus making the grading process more robust and reliable. However, what truly sets the Dull Grading App apart is its powerful data analytics capabilities. Leveraging the data collected, the application provides profound and actionable insights into the your application ensuring that your next bit design is even better. In summary, Dull Grading App by Zerda Lab Ltd. is a game-changer in the field of PDC drill bit dull grading. Its emphasis on ease of use, comprehensive data collection, and insightful data analysis makes it an indispensable tool for professionals in the industry. Try Dull Grading App today and transform your dull grading process into a smooth, insightful, and automated task."

Screenshots

HAY HILL4 screens
Dull Grading4 screens

Verdict

The call

The clearest difference is iOS requirement: Dull Grading at 13.0 against HAY HILL's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

HAY HILL ships an update every 4 months, Dull Grading every 2 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard1 real difference Β· 5 level
HAY HILL versus Dull Grading: the parameters behind the verdict, then further details
ParameterHAY HILLDull Grading
PriceFreeFree
Update frequencyEvery 4 monthsEvery 2 months β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.613.0 β€” better
Further details β€” not scored
Size160 MB44 MB
Age rating4+17+
Developer12 Hay Hill LtdZerdaLab Ltd

In-app purchases

None

HAY HILL

No in-app purchases

None

Dull Grading

No in-app purchases

Questions

Is HAY HILL free?
HAY HILL is free to download, with no in-app purchases.
Is Dull Grading free?
Dull Grading is free to download, with no in-app purchases.
Do HAY HILL or Dull Grading have ads?
Neither HAY HILL nor Dull Grading shows ads.
Which is updated more often, HAY HILL or Dull Grading?
HAY HILL ships an update every 4 months, and Dull Grading every 2 months. Most recently, HAY HILL was updated on October 26, 2026 and Dull Grading on October 27, 2026.

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