Comparison

OPEC vs Zaki

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

Head to head
About

OPEC

Access global oil and energy market data through an interactive platform. Explore flagship publications, dynamic charts, and historical data to understand market trends.

Highlights
  • Flagship publication library
  • Interactive charts and tables
  • Historical data archive
  • Global energy market insights
  • Dynamic data visualization
Features
Read full description

Our new app brings the world of oil and energy to your fingertips through an engaging, interactive platform. With a valuable library of our flagship publications including the "Monthly Oil Market Report", "World Oil Outlook" and the "Annual Statistical Bulletin" users gain unprecedented access to the pulse of global energy markets. Experience Dynamic Data Interact with our detailed charts and tables that transform complex market data into an easy-to-understand visual story. Explore a Library of Historical Data Our app provides an comprehensive archive of historical editions, granting users the ability to examine and analyze past trends in the energy market. This allows for richer context and understanding of how the energy markets have evolved over time.

About

Zaki

Features
Read full description

ZAKI®, a registered trademark of Zaki Universal Inc., stands for transparency, accountability, and trust in the digital giving economy. ZAKI provides transparent and privacy-preserving on-chain trackability of recorded contributions. Impact metrics are derived from related on-chain sales transactions at points of sale manifesting within the Zaki ecosystem (specifically from Zaki Pay App and Zaki Merchant App). ZAKI currently operates solely in viewing and analytics mode, displaying verified blockchain transactions and impact metrics. The app functions as a non-custodial blockchain interface — users retain full control of their private keys. Where Zaki Universal Inc. and/or its partners obtain appropriate regulatory authorizations, additional user-engagement or payment-integrated features may be enabled in accordance with applicable laws. ZAKI is designed, built, and deployed using proprietary systems and methods of USPTO pending patents of Zaki Universal Inc. Key Features • Track externally executed contributions recorded on-chain • View balances and impact metrics • Maintain visibility of verified blockchain transactions through a self-custodial interface

Screenshots

OPEC4 screens
Zaki3 screens

Verdict

The call

The clearest difference is update cadence: Zaki at every 3 months against OPEC's every 39 months. On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

OPEC ships an update every 39 months, Zaki every 3 months. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

Scorecard1 real difference · 8 level
OPEC versus Zaki: the parameters behind the verdict, then further details
ParameterOPECZaki
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 39 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size335 MB53 MB
Age rating4+4+
DeveloperOPECZaki Universal Inc.

In-app purchases

None

OPEC

No in-app purchases

None

Zaki

No in-app purchases

Questions

Is OPEC free?
OPEC is free to download, with no in-app purchases.
Is Zaki free?
Zaki is free to download, with no in-app purchases.
Do OPEC or Zaki have ads?
Neither OPEC nor Zaki shows ads.
Which is updated more often, OPEC or Zaki?
OPEC ships an update every 39 months, and Zaki every 3 months. Most recently, OPEC was updated on October 19, 2026 and Zaki on October 24, 2026.

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