Some friends browsing my phone and looking at my Pokemon Go was wondering why instead of names, I placed a Letter and numbers in it's place instead. Well, it's to help simplify things when I'm looking for the Pokemon to attack a PokeGym or to place as Defender.

It also helps if you can calculate the IV (Individual Value) of the Pokemon in your collection to find out the best one to keep and power up. With plenty of sites out there that provides you with IV Calculator, it's getting easier for people to come up with their own values and calculations so I won't post much about it here. Just a note, most of the IV Calculators online are not approved by Niantic so use them at your own risk because they are now on a banning spree to destroy whatever advantages you can get out of those sites like MAPS and Calculators. If you're looking for a manual way to key in your own Pokemon's IV and their information to calculate IV, you can CLICK HERE for an excel sheet version.

Now, back to the CP Tier. This is the maximum CP Value that is added to your Pokemon when you power up, the numbers will change due to the multipliers and evolution so just take this as a guide/reference point. This Tiers are compiled based on the various lists available online so I definitely didn't spend hours sitting in front of the computer doing all the calculation, My part is just to go through the various sites and make sure all the numbers are the same or if different, then use the averaged number from the few reference points.

S - Tier	CP Per Power Up
Dragonite	50
Snorlax	45
Lapras	43
Arcanine, Vaporeon	40
Gyarados	39
Exeggutor, Muk	38
Weezing, Flareon	37
A - Tier	CP Per Power Up
Slowbro, Victreebel, Machamp	35
Poliwrath	34
Clefable, Nidoking, Venusaur, Charizard	33
Golduck, Magmar, Nidoqueen, Vileplume, Blastoise, Weezing, Omastar	32
Aerodactyl, Golem, Wigglytuff, Dewgong, Ninetales, Magmar	31
Blastoise, Kabutops, Electabuzz, Starmie, Jolteon, Rapidash, Pinsir, Scyther, Tentacruel	30
Gengar, Hypno, Pidgeot, Rhydon, Seaking, Kangaskhan, Cloyster, Pinsir	29
B - Tier	CP Per Power Up
Primeape, Golbat, Raichu	27
Cloyster	26
Kingler, Tauros, Magneton, Venomoth, Alakazam, Tangela, Dragonair	25
Arbok, Dodrio, Growlythe, Porygon, Machoke	24
Fearow, Parasect, Sandslash	23
Jynx, Lickitung, Seadra, Marowak, Ivysaur, Persian, Drowzee	22
Electrode, Hitmonchan, Hitmonlee, Mr. Mime, Gloom, Ponyta, Weepinbell	21
Raticate, Beedrill	20
Butterfree, Pidgeotto, Haunter	18
Eevee	17
Dugtrio, Clefairy, Polywhirl, Kadabra, Bellsprout, Seel, Koffing, Rhyhorn, Kabuto	16
F - Tier	CP Per Power Up
Oddish	15
Squirtle, Bulbasaur, Charmander, Dratini	13
Onix, Vulpix, Paras, Pikachu, Mankey, Magnemite	12
Ekans, Sandshrew, Zubat, Geodude, Gastly	11
Pidgey, Doduo	10
Abra, Chansey	9
Rattata, Diglett	7
Magikarp	3

Hope you'd find this guide useful as I definitely do, using this as a chart helps me to determine among my pokemons, which to evolve and which to be send to the Professor to let him grind them down into candies.